Inventory (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended			12 Months Ended		3 Months Ended	12 Months Ended					12 Months Ended				12 Months Ended					3 Months Ended	12 Months Ended			12 Months Ended									12 Months Ended					12 Months Ended
	Sep. 27, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 B747 [Member]	Dec. 31, 2012 B747 [Member]	Dec. 31, 2013 B787 [Member]	Dec. 31, 2013 B787 [Member]	Dec. 31, 2012 B787 [Member]	Sep. 27, 2012 B787 [Member]	Dec. 31, 2013 Boeing - All Other Platforms [Member]	Dec. 31, 2012 Boeing - All Other Platforms [Member]	Dec. 31, 2013 A350 XWB [Member]	Dec. 31, 2012 A350 XWB [Member]	Dec. 31, 2013 Airbus - All Other Platforms [Member]	Dec. 31, 2012 Airbus - All Other Platforms [Member]	Dec. 31, 2013 G280 [Member]	Dec. 31, 2012 G280 [Member]	Dec. 31, 2013 G650 [Member]	Dec. 31, 2012 G650 [Member]	Sep. 27, 2012 G650 [Member]	Jun. 27, 2013 Rolls-Royce [Member]	Dec. 31, 2013 Rolls-Royce [Member]	Dec. 31, 2012 Rolls-Royce [Member]	Sep. 27, 2012 Rolls-Royce [Member]	Dec. 31, 2011 Sikorsky [Member]	Dec. 31, 2013 Sikorsky [Member]	Dec. 31, 2012 Sikorsky [Member]	Dec. 31, 2013 Bombardier C-Series [Member]	Dec. 31, 2012 Bombardier C-Series [Member]	Dec. 31, 2013 Aftermarket [Member]	Dec. 31, 2012 Aftermarket [Member]	Dec. 31, 2013 Other Platforms [Member]	Dec. 31, 2012 Other Platforms [Member]	Dec. 31, 2013 B767 [Member]	Dec. 31, 2012 B767 [Member]	Dec. 31, 2013 B767 propulsion [Member]	Dec. 31, 2012 B767 propulsion [Member]	Sep. 26, 2013 A350 XWB Non-recurring [Member]	Dec. 31, 2013 Rolls-Royce [Member]	Dec. 31, 2012 Rolls-Royce [Member]
Inventory By Platform [Abstract]
Inventory In Process		$ 1,266.7	$ 1,202.3		$ 96.4	$ 83.6	$ 263.9	$ 263.9	$ 225.2		$ 421.4	$ 392.3	$ 166.7	$ 133.2	$ 83.2	$ 88.2	$ 46.9	$ 83.3	$ 59.2	$ 36.7			$ 15.8	$ 12.6			$ 0	$ 0	$ 9.1	$ 3.9	$ 37.0	$ 45.0	$ 67.1	$ 98.3
Non-recurring production cost included in inventory		75.0	117.5		0.1	(0.7)	14.7	14.7	26.6		11.5	31.6	42.5	51.3	0	0	0	0	0	0			0	0			5.4	4.7	0	0	0	0	0.8	4.0
Total capitalized pre-production		486.2	524.6	553.2	4.4	7.2	158.2	158.2	189.5		7.0	5.8	76.5	56.8	0	0	4.9	5.5	192.7	208.4			42.5	51.4			0	0	0	0	0	0	0	0
Deferred production		1,661.2	1,173.8	813.2	1.0	3.6	597.3	597.3	595.1		(21.7)	(67.6)	388.8	177.4	18.8	18.2	233.7	98.3	373.3	297.3			69.3	51.2			0	0	0.7	0.3	0	0	0	0
Forward loss provision		(1,646.5)	(607.4)		(37.2)	(11.5)	(606.0)	(606.0)	(184.0)	(184.0)	(18.6)	(6.5)	(120.8)	(8.9)	0	0	(285.5)	(118.8)	(450.8)	(162.5)	(162.5)	(8.4)	(127.6)	(115.2)	(151.0)		0	0	0	0	0	0	0	0
Total inventory, net		1,842.6	2,410.8		64.7	82.2	428.1	428.1	852.4		399.6	355.6	553.7	409.8	102.0	106.4	0	68.3	174.4	379.9			0	0			5.4	4.7	9.8	4.2	37.0	45.0	67.9	102.3
Cumulative Forward Loss Charges, Net of Contract Liabilities, Open Blocks													123.8					463.1								29.0
Net Forward Loss Charges Recorded, Subsequent Planning Block					21.2
Net Forward Loss Charge Recorded	590.0	1,133.3			41.1		384.7	422.0	184.0				78.6				240.9	118.8	288.3	162.5			21.7	151.0											11.6	8.0	7.5			21.7	151.0
Net Decrease In Operating Profit From Impact Of Changes In Profit Booking Rates And Other Matters		1,133.3	644.7																			8.4
Contract Liability					$ 3.9												$ 74.2																				$ 5.8	$ 1.5	$ 7.7	$ 36.7