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The amount of the cost recognized during the period for defined contribution plans.

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Employee Benefit Plans - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015 USD ($) year
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost Recognized		$ 13.0
U.S. Qualified Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Effect Of Twenty Five Basis Point Discount Rate Decrease On Accumulated Benefit Obligation		$ 60.0
Expected long-term rate of return on plan assets		5.57%
U.S. Qualified Plans \| Scenario, Forecast
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets	5.65%
U.S. Qualified Plans \| Fixed-income
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		76.00%
U.S. Qualified Plans \| Equity
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		24.00%
U.S. Qualified Plans \| Global long-term debt instruments
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		7.00%
U.S. Qualified Plans \| U.S. large companies \| Equity
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		12.00%
U.S. Qualified Plans \| U.S. Small Companies \| Equity
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		2.00%
U.S. Qualified Plans \| International \| Equity
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		10.00%
U.S Non-Qualified Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Effect Of Twenty Five Basis Point Discount Rate Decrease On Accumulated Benefit Obligation		$ 1.9
Christian Salvesen Pension Scheme \| Matching Assets
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		25.00%
Christian Salvesen Pension Scheme \| Growth Assets
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		75.00%
Christian Salvesen Pension Scheme \| Notional Exposure For Synthetic Equity Exposure
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		40.00%
TDG Pension Scheme \| Matching Assets
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		30.00%
TDG Pension Scheme \| Growth Assets
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage		70.00%
UK Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Effect Of Twenty Five Basis Point Discount Rate Decrease On Accumulated Benefit Obligation		$ 51.0
Expected long-term rate of return on plan assets		5.40%
Defined Benefit Plan, Target Plan Asset Allocations, Acceptable Deviation		10.00%
Defined Benefit Plan, Actuarial Liability Sensitivities Hedged, Percentage		85.00%
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year		$ 16.3
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year		$ 5.2
Postretirement Medical Plan
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Requisite Age \| year		55
Deferred Compensation Arrangement with Individual, Requisite Service Period		10 years