Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 28, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 726.6	$ 697.7
Restricted Cash and Cash Equivalents	3.2	0.0
Accounts receivable, net	851.7	660.5
Inventory, net	1,363.2	1,515.3
Other current assets	67.3	36.9
Total current assets	3,012.0	2,910.4
Property, plant and equipment, net	2,018.7	1,991.6
Pension assets	309.2	282.3
Other assets	197.3	220.9
Total assets	5,537.2	5,405.2
Current liabilities
Accounts payable	762.1	579.7
Accrued expenses	258.3	216.2
Profit sharing	65.7	101.4
Current portion of long-term debt	27.9	26.7
Advance payments, short-term	131.0	199.3
Deferred revenue and other deferred credits, short-term	68.3	312.1
Deferred grant income liability - current	21.0	14.4
Other current liabilities	601.7	94.4
Total current liabilities	1,936.0	1,544.2
Liabilities Noncurrent
Long-term debt	1,060.9	1,060.0
Advance payments, long-term	255.6	342.0
Pension/OPEB obligation	40.3	43.9
Deferred grant income liability - non-current	44.9	63.4
Deferred revenue and other deferred credits	166.5	146.8
Other liabilities	273.6	276.1
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value $0.01, 10,000,000 shares authorized, no shares issued	0.0	0.0
Additional Paid in Capital [Abstract]
Additional paid-in capital	1,081.0	1,078.9
AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract
Accumulated other comprehensive loss	(153.3)	(186.9)
Retained Earnings Accumulated Deficit [Abstract]
Retained earnings	2,310.9	2,113.9
Treasury Stock, Value	(1,480.9)	(1,078.8)
Total stockholders’ equity	1,758.9	1,928.3
Noncontrolling interest	0.5	0.5
Total equity	1,759.4	1,928.8
Total liabilities and equity	5,537.2	5,405.2
Class A [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Common stock	$ 1.2	$ 1.2