Changes in Estimates (Details) - USD ($) $ / shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Change In Estimate [Line Items]
Current Period Forward Loss Recorded		$ 2.9
Cumulative Catch Up Adjustment	$ 32.2	$ 12.0
Changes in Contract Estimates, aggregate, Affecting earnings from Continuing Operations, per Share diluted	$ 220	$ 70
Change In Accounting Estimate, aggregate	$ 47.2	$ 14.9
Reduction In Previously Reported Forward-Loss	15.0
Boeing - all other platforms [Member]
Change In Estimate [Line Items]
Reduction In Previously Reported Forward-Loss	3.1	2.9
Fuselage Systems [Member]
Change In Estimate [Line Items]
Current Period Forward Loss Recorded		2.9
Cumulative Catch Up Adjustment	16.2	2.7
Reduction In Previously Reported Forward-Loss	3.1
Wing Systems [Member]
Change In Estimate [Line Items]
Current Period Forward Loss Recorded	3.0	0.0
Cumulative Catch Up Adjustment	10.1	0.0
Wing Systems [Member] | Boeing - all other platforms [Member]
Change In Estimate [Line Items]
Current Period Forward Loss Recorded	3.0	0.0
Propulsion Systems [Member]
Change In Estimate [Line Items]
Current Period Forward Loss Recorded	8.9	0.0
Cumulative Catch Up Adjustment	5.9	9.3
Propulsion Systems [Member] | Boeing - all other platforms [Member]
Change In Estimate [Line Items]
Reduction In Previously Reported Forward-Loss	5.5	0.0
Propulsion Systems [Member] | Rolls-Royce [Member]
Change In Estimate [Line Items]
Reduction In Previously Reported Forward-Loss	$ 3.4	$ 0.0