v3.4.0.3
EMPLOYEE BENEFIT PLANS (Details)
|
|
12 Months Ended |
|
|
May. 23, 2016
USD ($)
shares
|
USD ($)
Employee
$ / shares
shares
|
USD ($)
Plans
Objectives
Age
$ / shares
shares
|
USD ($)
Employee
$ / shares
shares
|
USD ($)
$ / shares
|
May. 14, 2013
shares
|
| Compensation Related Costs [Line Items] |
|
|
|
|
|
|
| Defined contribution pension match |
|
|
3.00%
|
|
|
|
| Defined contribution pension |
|
|
3.00%
|
|
|
|
| Defined contribution amount |
|
|
$ 22,200,000
|
$ 15,200,000
|
$ 12,700,000
|
|
| Pension plan investment strategy, number of objectives | Objectives |
|
|
3
|
|
|
|
| Change in benefit obligation: |
|
|
|
|
|
|
| Projected benefit obligation (PBO) at beginning of period |
|
$ 525,053,000
|
$ 639,299,000
|
637,641,000
|
|
|
| Service cost for benefits earned during the period |
|
|
8,243,000
|
7,878,000
|
7,886,000
|
|
| Interest cost on PBO |
|
|
20,108,000
|
26,000,000
|
26,861,000
|
|
| Actuarial loss (gain) |
|
|
(17,096,000)
|
86,940,000
|
|
|
| Benefit payments and expenses |
|
|
(29,836,000)
|
(28,191,000)
|
|
|
| Curtailments |
|
|
(12,960,000)
|
0
|
|
|
| Settlements |
|
|
(65,799,000)
|
0
|
|
|
| Effect of exchange rate changes |
|
|
(16,906,000)
|
(90,969,000)
|
|
|
| Projected benefit obligation (PBO) at end of period |
|
|
525,053,000
|
639,299,000
|
637,641,000
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
$ 454,946,000
|
539,723,000
|
550,818,000
|
|
|
| Actual return on assets |
|
|
(6,271,000)
|
57,691,000
|
|
|
| Employer contributions |
|
|
32,128,000
|
34,633,000
|
|
|
| Benefit payments and expenses |
|
|
(29,836,000)
|
(28,191,000)
|
|
|
| Settlements |
|
|
(65,799,000)
|
0
|
|
|
| Effect of exchange rate changes |
|
|
(14,999,000)
|
(75,228,000)
|
|
|
| Market value of assets at end of period |
|
|
454,946,000
|
539,723,000
|
550,818,000
|
|
| Reconciliation of funded status: |
|
|
|
|
|
|
| Accumulated benefit obligation (ABO) |
|
|
524,540,000
|
615,136,000
|
|
|
| Net recognized pension liability |
|
|
70,107,000
|
99,576,000
|
|
|
| Amounts recognized in accumulated other comprehensive loss |
|
|
235,720,000
|
252,920,000
|
|
|
| Components of net periodic pension cost |
|
|
|
|
|
|
| Service cost for benefits earned during the period |
|
|
8,243,000
|
7,878,000
|
7,886,000
|
|
| Interest cost on PBO |
|
|
20,108,000
|
26,000,000
|
26,861,000
|
|
| Expected return on assets |
|
|
(27,208,000)
|
(31,020,000)
|
(29,282,000)
|
|
| Amortization of unrecognized losses |
|
|
8,246,000
|
6,653,000
|
7,705,000
|
|
| Net periodic pension cost |
|
|
9,389,000
|
$ 9,511,000
|
13,170,000
|
|
| Amount in accumulated OCI expected to be recognized in following fiscal year |
|
|
$ 6,800,000
|
|
|
|
| Defined benefit plan, assets, target allocations |
|
|
|
|
|
|
| Target allocation of plan assets |
|
|
100.00%
|
100.00%
|
|
|
| Actual allocation of plan assets |
|
|
100.00%
|
100.00%
|
|
|
| Projected benefit payments by year |
|
|
|
|
|
|
| 2017 |
|
|
$ 22,468,000
|
|
|
|
| 2018 |
|
|
22,997,000
|
|
|
|
| 2019 |
|
|
23,572,000
|
|
|
|
| 2020 |
|
|
24,003,000
|
|
|
|
| 2021 |
|
|
24,578,000
|
|
|
|
| Aggregate 2022 - 2025 |
|
|
$ 131,082,000
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Common Stock shares reserved | shares |
|
|
3,950,524
|
|
|
|
| Number of shares available for grant | shares |
|
|
1,468,226
|
|
|
|
| Stock-based compensation expense |
|
|
$ 21,181,000
|
$ 16,353,000
|
15,433,000
|
|
| Options, outstanding, weighted average exercise price, beginning balance | $ / shares |
|
$ 57.74
|
$ 57.80
|
|
|
|
| Options, grants in period, weighted average exercise price | $ / shares |
|
|
57.52
|
|
|
|
| Options, exercises in period, weighted average exercise price | $ / shares |
|
|
0.00
|
$ 45.31
|
|
|
| Options, expired or forfeited in period, weighted average exercise price | $ / shares |
|
|
54.94
|
|
|
|
| Options, outstanding, weighted average exercise price, ending balance | $ / shares |
|
|
57.74
|
$ 57.80
|
|
|
| Options, exercisable, weighted average exercise price | $ / shares |
|
|
$ 53.40
|
|
|
|
| Options, outstanding, number, beginning balance | shares |
|
2,041,442
|
1,336,136
|
|
|
|
| Options, grants in period | shares |
|
|
740,718
|
|
|
|
| Options, exercises in period | shares |
|
|
0
|
114,145
|
|
|
| Options, expired or forfeited in period | shares |
|
|
35,412
|
|
|
|
| Options, outstanding, number, ending balance | shares |
|
|
2,041,442
|
1,336,136
|
|
|
| Options, exercisable | shares |
|
|
1,057,607
|
|
|
|
| Options, exercisable, weighted average remaining contractual term |
|
|
4 years 10 months 5 days
|
|
|
|
| Options, outstanding, weighted average remaining contractual term |
|
|
6 years 9 months
|
|
|
|
| Options, outstanding, intrinsic value |
|
|
$ 0
|
|
|
|
| Options, exercisable, intrinsic value |
|
|
0
|
|
|
|
| Tax benefit attributable to options exercised |
|
|
$ 0
|
$ 1,600,000
|
5,700,000
|
|
| Non-vested Restricted Stock, nonvested, number, beginning balance | shares |
|
440,856
|
419,229
|
|
|
|
| Non-vested Restricted Stock, grants in period | shares |
|
|
213,349
|
|
|
|
| Non-vested Restricted Stock, vested in period | shares |
|
|
182,484
|
|
|
|
| Non-vested Restricted Stock, forfeited in period | shares |
|
|
9,238
|
|
|
|
| Non-vested Restricted Stock, nonvested, number, ending balance | shares |
|
|
440,856
|
419,229
|
|
|
| Non-vested Restricted Stock, weighted average grant date fair value, beginning balance | $ / shares |
|
$ 65.24
|
$ 62.81
|
|
|
|
| Non-vested Restricted Stock, grants in period, weighted average grant date fair value | $ / shares |
|
|
56.76
|
|
|
|
| Non-vested Restricted Stock, forfeited in period, weighted average grant date fair value | $ / shares |
|
|
65.62
|
|
|
|
| Non-vested Restricted Stock, vested in period, weighted average grant date fair value | $ / shares |
|
|
49.72
|
|
|
|
| Non-vested Restricted Stock, weighted average grant date fair value, ending balance | $ / shares |
|
|
$ 65.24
|
$ 62.81
|
|
|
| Cash Bonus |
|
|
|
$ 19,900,000
|
17,200,000
|
|
| Contributions to deferred compensation plan |
|
|
$ 1,300,000
|
1,500,000
|
900,000
|
|
| Americas |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
|
$ 900,000
|
2,900,000
|
|
| Southern North Sea |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
|
|
$ 2,100,000
|
|
| Number of terminated contracts | Contract |
|
|
|
|
2
|
|
| Voluntary separation program |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Voluntary separation program, number of employees offered | Employee |
|
|
|
2,888
|
|
|
| Voluntary separation program, number of employees acceptance | Employee |
|
|
|
137
|
|
|
| Severance cost |
|
|
8,600,000
|
|
|
|
| Voluntary separation program | Direct cost |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
7,700,000
|
|
|
|
| Voluntary separation program | General administrative expense |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
900,000
|
|
|
|
| Involuntary separation program |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
13,900,000
|
|
|
|
| Involuntary separation program | Africa |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
|
$ 900,000
|
|
|
| Involuntary separation program | Direct cost |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
5,100,000
|
|
|
|
| Involuntary separation program | General administrative expense |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
8,800,000
|
|
|
|
| Fair value, measurements, recurring |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Rabbi Trust investments |
|
|
$ 2,990,000
|
$ 2,379,000
|
|
|
| Stock options |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Award requisite service period |
|
|
3 years
|
|
|
|
| Fair value assumptions, risk free interest rate |
|
|
1.62%
|
1.67%
|
1.00%
|
|
| Fair value assumptions, expected life (years) |
|
|
5 years
|
5 years
|
5 years
|
|
| Fair value assumptions, volatility |
|
|
28.10%
|
30.10%
|
48.70%
|
|
| Fair value assumptions, dividend yield |
|
|
3.14%
|
2.06%
|
1.60%
|
|
| Weighted average grant-date fair value of options granted | $ / shares |
|
|
$ 10.71
|
$ 17.17
|
$ 23.77
|
|
| Share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition |
|
|
1 year 8 months
|
|
|
|
| Share-based compensation, nonvested awards, number of shares | shares |
|
|
983,835
|
|
|
|
| Share-based compensation arrangement by share-based payment award, options, exercises in period, intrinsic value |
|
|
$ 0
|
$ 2,400,000
|
$ 15,500,000
|
|
| Share-based compensation vested awards fair value |
|
|
7,400,000
|
8,900,000
|
5,100,000
|
|
| Employee service share-based compensation, cash received from exercise of stock options |
|
|
0
|
5,200,000
|
15,400,000
|
|
| Tax benefit attributable to options exercised |
|
|
0
|
600,000
|
5,400,000
|
|
| Share-based compensation, nonvested awards, compensation cost can't yet recognized |
|
|
$ 7,600,000
|
|
|
|
| Restricted stock and restricted stock units |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Award requisite service period |
|
|
3 years
|
|
|
|
| Stock-based compensation expense |
|
|
$ 12,900,000
|
10,100,000
|
9,400,000
|
|
| Share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition |
|
|
1 year 8 months
|
|
|
|
| Share-based compensation, nonvested awards, number of shares | shares |
|
|
440,856
|
|
|
|
| Share-based compensation, nonvested awards, compensation cost can't yet recognized |
|
|
$ 11,100,000
|
|
|
|
| Performance cash |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Award requisite service period |
|
|
3 years
|
|
|
|
| Performance cash max payout |
|
|
$ 14,000,000
|
13,800,000
|
12,200,000
|
|
| Performance cash compensation expense |
|
|
$ 1,400,000
|
$ 14,100,000
|
$ 8,700,000
|
|
| Performance cash | Maximum |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Performance cash, percentage of target amount |
|
|
200.00%
|
|
|
|
| Performance cash | Minimum |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Performance cash, percentage of target amount |
|
|
0.00%
|
|
|
|
| Plan 2007 |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Common Stock shares reserved | shares |
|
|
5,400,000
|
|
|
2,400,000
|
| Common Stock award, maximum | shares |
|
|
500,000
|
|
|
|
| Reduction from a full value share granted, number of shares | shares |
|
|
2
|
|
|
|
| Reduction from an option and stock appreciation right granted, number of shares | shares |
|
|
1
|
|
|
|
| Plan 2007 | 2007 Plan Amendment [Member] | Subsequent event |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Common Stock, shares reserved for issuance | shares |
6,400,000
|
|
|
|
|
|
| Common Stock, full value shares reserved | shares |
3,200,000
|
|
|
|
|
|
| Common Stock, additional capital shares reserved for future issuance | shares |
5,250,000
|
|
|
|
|
|
| Common Stock, additional full value shares reserved for future issuance | shares |
2,625,000
|
|
|
|
|
|
| Common Stock award, maximum | shares |
1,000,000
|
|
|
|
|
|
| Number of shares considered, stock option and stock appreciation right granted | shares |
1
|
|
|
|
|
|
| Number of shares considered, stock option and stock appreciation right settled | shares |
2
|
|
|
|
|
|
| Total compensation expense authorized for non-employee directors |
$ 1,125,000
|
|
|
|
|
|
| Plan 2007 | Stock options |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Stock options, expiration period |
|
|
10 years
|
|
|
|
| Options, grants in period, weighted average exercise price | $ / shares |
|
|
$ 58.17
|
$ 74.37
|
$ 62.66
|
|
| Plan 2004 | Stock options |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Stock options, expiration period |
|
|
10 years
|
|
|
|
| Original terms |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Retirement terms, years of service |
|
|
5 years
|
|
|
|
| Retirement terms, retirement age |
|
|
62 years
|
|
|
|
| First amendment |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Retirement terms, years of service and retirement age |
|
|
80 years
|
|
|
|
| Share-based compensation award, tranche one | Stock options |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Award vesting rights, percentage |
|
|
33.00%
|
|
|
|
| Share-based compensation award, tranche two | Stock options |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Award vesting rights, percentage |
|
|
33.00%
|
|
|
|
| Share-based compensation award, tranche three | Stock options |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Award vesting rights, percentage |
|
|
33.00%
|
|
|
|
| Fair value, inputs, Level 1 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
$ 14,229,000
|
$ 13,657,000
|
|
|
|
| Market value of assets at end of period |
|
|
14,229,000
|
$ 13,657,000
|
|
|
| Fair value, inputs, Level 1 | Fair value, measurements, recurring |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Rabbi Trust investments |
|
|
2,990,000
|
2,379,000
|
|
|
| Fair value, inputs, Level 2 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
438,233,000
|
470,139,000
|
|
|
|
| Market value of assets at end of period |
|
|
438,233,000
|
470,139,000
|
|
|
| Fair value, inputs, Level 2 | Fair value, measurements, recurring |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Rabbi Trust investments |
|
|
0
|
0
|
|
|
| Fair value, inputs, Level 3 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
2,484,000
|
55,927,000
|
|
|
|
| Actual return on assets |
|
|
3,132,000
|
|
|
|
| Net purchases, sales and settlements |
|
|
(56,859,000)
|
|
|
|
| Effect of exchange rate changes |
|
|
284,000
|
|
|
|
| Market value of assets at end of period |
|
|
2,484,000
|
55,927,000
|
|
|
| Fair value, inputs, Level 3 | Fair value, measurements, recurring |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Rabbi Trust investments |
|
|
$ 0
|
$ 0
|
|
|
| Equity securities |
|
|
|
|
|
|
| Defined benefit plan, assets, target allocations |
|
|
|
|
|
|
| Target allocation of plan assets |
|
|
58.30%
|
58.30%
|
|
|
| Actual allocation of plan assets |
|
|
60.70%
|
57.10%
|
|
|
| Debt securities |
|
|
|
|
|
|
| Defined benefit plan, assets, target allocations |
|
|
|
|
|
|
| Target allocation of plan assets |
|
|
31.10%
|
31.10%
|
|
|
| Actual allocation of plan assets |
|
|
35.90%
|
35.80%
|
|
|
| Property |
|
|
|
|
|
|
| Defined benefit plan, assets, target allocations |
|
|
|
|
|
|
| Target allocation of plan assets |
|
|
0.00%
|
0.00%
|
|
|
| Actual allocation of plan assets |
|
|
0.10%
|
1.60%
|
|
|
| Other assets |
|
|
|
|
|
|
| Defined benefit plan, assets, target allocations |
|
|
|
|
|
|
| Target allocation of plan assets |
|
|
10.60%
|
10.60%
|
|
|
| Actual allocation of plan assets |
|
|
3.30%
|
5.50%
|
|
|
| Cash and cash equivalents |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
14,229,000
|
$ 13,657,000
|
|
|
|
| Market value of assets at end of period |
|
|
14,229,000
|
$ 13,657,000
|
|
|
| Cash and cash equivalents | Fair value, inputs, Level 1 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
14,229,000
|
13,657,000
|
|
|
|
| Market value of assets at end of period |
|
|
14,229,000
|
13,657,000
|
|
|
| Cash and cash equivalents | Fair value, inputs, Level 2 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Cash and cash equivalents | Fair value, inputs, Level 3 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Equity investments - U.K. |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
61,085,000
|
104,953,000
|
|
|
|
| Market value of assets at end of period |
|
|
61,085,000
|
104,953,000
|
|
|
| Equity investments - U.K. | Fair value, inputs, Level 1 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Equity investments - U.K. | Fair value, inputs, Level 2 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
61,085,000
|
104,953,000
|
|
|
|
| Market value of assets at end of period |
|
|
61,085,000
|
104,953,000
|
|
|
| Equity investments - U.K. | Fair value, inputs, Level 3 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Equity investments - Non-U.K. |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
117,140,000
|
98,867,000
|
|
|
|
| Market value of assets at end of period |
|
|
117,140,000
|
98,867,000
|
|
|
| Equity investments - Non-U.K. | Fair value, inputs, Level 1 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Equity investments - Non-U.K. | Fair value, inputs, Level 2 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
117,140,000
|
98,867,000
|
|
|
|
| Market value of assets at end of period |
|
|
117,140,000
|
98,867,000
|
|
|
| Equity investments - Non-U.K. | Fair value, inputs, Level 3 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Diviersified growth (absolute return) funds |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
98,024,000
|
101,242,000
|
|
|
|
| Market value of assets at end of period |
|
|
98,024,000
|
101,242,000
|
|
|
| Diviersified growth (absolute return) funds | Fair value, inputs, Level 1 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Diviersified growth (absolute return) funds | Fair value, inputs, Level 2 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
98,024,000
|
101,242,000
|
|
|
|
| Market value of assets at end of period |
|
|
98,024,000
|
101,242,000
|
|
|
| Diviersified growth (absolute return) funds | Fair value, inputs, Level 3 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Government debt securities |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
72,728,000
|
71,998,000
|
|
|
|
| Market value of assets at end of period |
|
|
72,728,000
|
71,998,000
|
|
|
| Government debt securities | Fair value, inputs, Level 1 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Government debt securities | Fair value, inputs, Level 2 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
72,728,000
|
71,998,000
|
|
|
|
| Market value of assets at end of period |
|
|
72,728,000
|
71,998,000
|
|
|
| Government debt securities | Fair value, inputs, Level 3 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Corporate debt securities |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
89,256,000
|
93,079,000
|
|
|
|
| Market value of assets at end of period |
|
|
89,256,000
|
93,079,000
|
|
|
| Corporate debt securities | Fair value, inputs, Level 1 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Corporate debt securities | Fair value, inputs, Level 2 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
89,256,000
|
93,079,000
|
|
|
|
| Market value of assets at end of period |
|
|
89,256,000
|
93,079,000
|
|
|
| Corporate debt securities | Fair value, inputs, Level 3 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Insurance policies |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
2,484,000
|
55,927,000
|
|
|
|
| Market value of assets at end of period |
|
|
2,484,000
|
55,927,000
|
|
|
| Insurance policies | Fair value, inputs, Level 1 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Insurance policies | Fair value, inputs, Level 2 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
0
|
0
|
|
|
|
| Market value of assets at end of period |
|
|
0
|
0
|
|
|
| Insurance policies | Fair value, inputs, Level 3 |
|
|
|
|
|
|
| Change in plan assets: |
|
|
|
|
|
|
| Market value of assets at beginning of period |
|
2,484,000
|
55,927,000
|
|
|
|
| Market value of assets at end of period |
|
|
$ 2,484,000
|
55,927,000
|
|
|
| Chief Executive Officer |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
|
5,500,000
|
|
|
| Officers |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
|
|
$ 5,500,000
|
$ 2,900,000
|
|
| Officers | Subsequent event |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Severance cost |
|
$ 4,000,000
|
|
|
|
|
| Number of other employee departure | Employee |
|
2
|
|
|
|
|
| Non-employee directors | Plan 2003 |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Common Stock shares reserved | shares |
|
|
250,000
|
|
|
|
| Stock options, grants in period, net of forfeitures | shares |
|
|
5,000
|
|
|
|
| Non-employee directors | Plan 2003 | Stock options |
|
|
|
|
|
|
| Incentive Compensation |
|
|
|
|
|
|
| Stock options, expiration period |
|
|
10 years
|
|
|
|
| Award requisite service period |
|
|
6 months
|
|
|
|
| Pension plan | U.K. pension plan |
|
|
|
|
|
|
| Compensation Related Costs [Line Items] |
|
|
|
|
|
|
| Annual rate increase limit |
|
|
5.00%
|
|
|
|
| Number of original closed defined benefit pension plans | Plans |
|
|
2
|
|
|
|
| Minimum contribution match |
|
|
5.00%
|
|
|
|
| Number of other defined contribution plans | Plans |
|
|
3
|
|
|
|
| Number of other defined contribution plans closed to new members | Plans |
|
|
2
|
|
|
|
| Estimated cash contributions |
|
|
$ 17,800,000
|
|
|
|
| Assumptions used |
|
|
|
|
|
|
| Discount rate |
|
|
3.30%
|
4.40%
|
4.40%
|
|
| Expected return on plan assets |
|
|
5.40%
|
6.29%
|
6.29%
|
|
| Pension increase rate |
|
|
2.80%
|
3.10%
|
3.30%
|
|
| Pension plan | U.K. pension plan | Pilot |
|
|
|
|
|
|
| Compensation Related Costs [Line Items] |
|
|
|
|
|
|
| Closed plan maximum contribution |
|
|
7.35%
|
|
|
|
| Pension plan | U.K. pension plan | Other employee |
|
|
|
|
|
|
| Compensation Related Costs [Line Items] |
|
|
|
|
|
|
| Closed plan maximum contribution |
|
|
7.00%
|
|
|
|
| Pension plan | Norway pension plan |
|
|
|
|
|
|
| Assumptions used |
|
|
|
|
|
|
| Discount rate |
|
|
2.50%
|
4.25%
|
4.00%
|
|
| Rate of compensation increase |
|
|
3.50%
|
4.00%
|
4.25%
|
|
| Social security increase amount |
|
|
3.25%
|
3.75%
|
4.00%
|
|
| Expected return on plan assets |
|
|
1.50%
|
2.75%
|
3.25%
|
|
| Pension increase rate |
|
|
0.00%
|
1.75%
|
1.25%
|
|
| Pension plan | Norway pension plan | Minimum |
|
|
|
|
|
|
| Compensation Related Costs [Line Items] |
|
|
|
|
|
|
| Years of service for maximum pension | Age |
|
|
30
|
|
|
|
| Pension plan | Norway pension plan | Pilot |
|
|
|
|
|
|
| Compensation Related Costs [Line Items] |
|
|
|
|
|
|
| Retirement age | Age |
|
|
58
|
|
|
|
| Pension plan | Norway pension plan | Other employee |
|
|
|
|
|
|
| Compensation Related Costs [Line Items] |
|
|
|
|
|
|
| Retirement age | Age |
|
|
62
|
|
|
|
| X |
- DefinitionThe plan limits the rate of annual increases in pensionable salary to the lesser of annual increases in UK price inflation or this percentage.
| Name: |
brs_AnnualRateIncreaseLimit |
| Namespace Prefix: |
brs_ |
| Data Type: |
num:percentItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionThe amount of cash bonuses to key employees in accordance with the Annual Incentive Compensation Plan.
| Name: |
brs_CashBonus |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionThe maximum percentage of a participant's non-variable salary.
| Name: |
brs_ClosedPlanMaximumContribution |
| Namespace Prefix: |
brs_ |
| Data Type: |
num:percentItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionThe additional number of common shares reserved for future issuance. The share is in regards to the number option and stock appreciation it can be settled for (two shares).
| Name: |
brs_CommonStockAdditionalCapitalSharesReservedforFutureIssuance |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
instant |
|
| X |
- DefinitionThe additional number of full value common shares reserved for future issuance. The full value share is in regards to the number option and stock appreciation right granted.
| Name: |
brs_CommonStockAdditionalFullValueCapitalSharesReservedforFutureIssuance |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
instant |
|
| X |
- DefinitionAggregate additional number of common shares reserved for future issuance. Share amount is in regards to the number of option and stock appreciation right it may be settled for (two shares).
| Name: |
brs_CommonStockCapitalSharesReservedForFutureIssuanceSettled |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
instant |
|
| X |
- DefinitionAggregate number of full value common shares reserved for future issuance.
| Name: |
brs_CommonStockFullValueCapitalSharesReservedForFutureIssuance |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
instant |
|
| X |
- DefinitionThe amount of contributions by the employer to a deferred compensation plan.
| Name: |
brs_ContributionsToDeferredCompensationPlan |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
duration |
|
| X |
- DefinitionThe annual percentage of employees' compensation contributed at the end of each calendar year to defined contribution plan.
| Name: |
brs_DefinedContributionPension |
| Namespace Prefix: |
brs_ |
| Data Type: |
num:percentItemType |
| Balance Type: |
na |
| Period Type: |
instant |
|
| X |
- DefinitionThe number of unvested stock option shares as of the balance sheet date.
| Name: |
brs_EmployeeServiceShareBasedCompensationNonvestedAwardsNumberOfShares |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
instant |
|
| X |
- DefinitionThe total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares in accordance with the terms of the arrangement.
| Name: |
brs_EmployeeServiceShareBasedCompensationVestedAwardsFairValue |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
instant |
|
| X |
- DefinitionThe members minimum percentage of non-variable salary for Bristow Helicopters to match the contribution.
| Name: |
brs_MinimumContributionMatch |
| Namespace Prefix: |
brs_ |
| Data Type: |
num:percentItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionNumber of original closed defined benefit pension plans.
| Name: |
brs_NumberOfOriginalClosedDefinedBenefitPensionPlans |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:integerItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionNumber of other defined contribution plans.
| Name: |
brs_NumberOfOtherDefinedContributionPlans |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:integerItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionNumber of other defined contribution plans closed to new members.
| Name: |
brs_NumberOfOtherDefinedContributionPlansClosedToNewMembers |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:integerItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionNumber of other employee departure during the period.
| Name: |
brs_NumberOfOtherEmployeeDeparture |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:integerItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionThe number of shares considered in regards to each option and stock appreciation right granted under the incentive compensation plan.
| Name: |
brs_NumberOfSharesConsideredStockOptionAndStockAppreciationRightGranted |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
instant |
|
| X |
- DefinitionThe number of shares considered in regards to each option and stock appreciation right may be settled under the incentive compensation plan.
| Name: |
brs_NumberOfSharesConsideredStockOptionAndStockAppreciationRightSettled |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
instant |
|
| X |
- DefinitionNumber of terminated contracts recognized during the period.
| Name: |
brs_NumberOfTerminatedContracts |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:integerItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionNumber of objectives in the company’s pension plan investment strategy.
| Name: |
brs_PensionPlanInvestmentStrategyNumberOfObjectives |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:integerItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionThe reduction to the number of shares available for issuance from a full value share granted.
| Name: |
brs_ReductionFromAFullValueShareGrantedNumberOfShares |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionThe reduction to the number of shares available for issuance from an option and stock appreciation right granted.
| Name: |
brs_ReductionFromAnOptionAndStockAppreciationRightGrantedNumberOfShares |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:sharesItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionDefined benefit pension plans pilots retirement age.
| Name: |
brs_RetirementAge |
| Namespace Prefix: |
brs_ |
| Data Type: |
xbrli:integerItemType |
| Balance Type: |
na |
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- DefinitionFor defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.
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- DefinitionThe pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.
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- DefinitionThe difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost)
-URI http://asc.fasb.org/extlink&oid=6504192
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6504226
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- DefinitionAmount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.
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- DefinitionThe amount of gains or losses recognized in net periodic benefit cost.
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- DefinitionThe interest rate used to adjust for the time value of money.
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- DefinitionAn assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.
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- Definition1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.
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- DefinitionThe amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.
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- DefinitionThe increase in the fair value of plan assets from contributions made by the employer.
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- DefinitionThe amount of decrease that is related to an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.
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- DefinitionAmount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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- DefinitionAmount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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- DefinitionAmount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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- DefinitionAmount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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- DefinitionAmount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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- DefinitionAmount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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- DefinitionAn amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.
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- DefinitionAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.
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- DefinitionAmount of gain (loss) from foreign currency exchange rate changes for benefit obligation for plans of a foreign operation whose functional currency is not the reporting currency.
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- DefinitionThe amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.
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- DefinitionThe increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.
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- DefinitionThe total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.
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- DefinitionThe actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.
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- DefinitionThe amount of decrease that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts.
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- DefinitionTarget allocation of investments of this type to total plan assets presented on a weighted average basis.
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- DefinitionWeighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
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- DefinitionAmount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.
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- DefinitionEstimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
| Name: |
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| Namespace Prefix: |
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| Data Type: |
xbrli:durationItemType |
| Balance Type: |
na |
| Period Type: |
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|
| X |
- DefinitionThe number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.
| Name: |
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| Data Type: |
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| Period Type: |
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|
| X |
- DefinitionWeighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.
| Name: |
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue |
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| Data Type: |
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na |
| Period Type: |
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|
| X |
- DefinitionThe number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).
| Name: |
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod |
| Namespace Prefix: |
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| Data Type: |
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| Balance Type: |
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| Period Type: |
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|
| X |
- DefinitionThe weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).
| Name: |
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue |
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| X |
- DefinitionThe number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.
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| Period Type: |
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|
| X |
- DefinitionThe weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.
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| Period Type: |
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|
| X |
- DefinitionThe number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.
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| Namespace Prefix: |
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| Data Type: |
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| Balance Type: |
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| Period Type: |
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| X |
- DefinitionThe weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.
| Name: |
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue |
| Namespace Prefix: |
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| Data Type: |
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| Balance Type: |
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| Period Type: |
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| X |
- DefinitionThe estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.
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| Period Type: |
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| X |
- DefinitionThe estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.
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|
| X |
- DefinitionThe risk-free interest rate assumption that is used in valuing an option on its own shares.
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| Period Type: |
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|
| X |
- DefinitionThe difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.
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| X |
- DefinitionThe number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.
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| Data Type: |
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na |
| Period Type: |
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|
| X |
- DefinitionThe weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.
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| Data Type: |
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| Period Type: |
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|
| X |
- DefinitionAmount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.
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| Balance Type: |
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|
| X |
- DefinitionFor presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.
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| X |
- DefinitionWeighted average price of options that were either forfeited or expired.
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| X |
- DefinitionNet number of share options (or share units) granted during the period.
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| X |
- DefinitionGross number of share options (or share units) granted during the period.
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| X |
- DefinitionThe weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.
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| X |
- DefinitionAmount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.
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| X |
- DefinitionWeighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.
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| X |
- DefinitionWeighted average price at which option holders acquired shares when converting their stock options into shares.
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- DefinitionPeriod from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
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| X |
- DefinitionExpected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section D
-Subsection 2
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| X |
- Details
| Name: |
brs_DefinedBenefitPlanNameAxis=brs_UkPensionPlanMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
us-gaap_TitleOfIndividualAxis=brs_PilotMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
us-gaap_TitleOfIndividualAxis=brs_OtherEmployeeMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
brs_DefinedBenefitPlanNameAxis=brs_NorwayPensionPlanMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
|
