Commitments, Contingencies and Guarantees (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 28, 2018	Jun. 28, 2018	Dec. 31, 2017	Jun. 29, 2017	Dec. 31, 2016
Commitments Contingencies And Guarantees [Abstract]
Litigation settlement amount against Boeing	$ 139,000,000
Current Period Forward Loss Recorded		$ (1,200,000)
Service warranty roll forward
Product Warranty And Extraordinary Rework		166,400,000
Charges to costs and expenses	2,900,000
Product Warranty Accrual, Payments	(2,700,000)
Product Warranty And Extraordinary Rework	166,300,000	166,300,000	$ 166,400,000
Product Warranty Extraordinary Rework Accrual Currency Translation Increase Decrease	(300,000)
Commitments Contingencies And Guarantees Textuals [Abstract]
Outstanding amount of guarantees	20,700,000	20,700,000	23,200,000
Restricted Cash and Investments, Noncurrent	20,000,000	20,000,000	20,000,000	$ 19,900,000	$ 19,900,000
Product Liability Accrual, Component Amount	104,000,000	$ 104,000,000	101,000,000
Product Liability Contingency, Loss Exposure in Excess of Accrual, Best Estimate	$ 179,000,000.0		$ 223,000,000.0