Revenue Recognition - Schedule of ASC 606 Impact on Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended																12 Months Ended
	Dec. 31, 2018		Sep. 29, 2018	[1]	Jun. 30, 2018	[2]	Mar. 31, 2018		Dec. 31, 2017		Sep. 30, 2017	[3]	Jul. 01, 2017	[4]	Apr. 01, 2017	[5]	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	$ 1,195.2		$ 1,133.1		$ 1,186.4		$ 1,217.0		$ 1,283.0		$ 1,231.3		$ 1,237.9		$ 1,194.0		$ 4,731.7	[6]	$ 4,946.2	[6]	$ 5,280.6	[6]
Cost of sales																	2,900.2		2,966.7		3,228.8
Gross profit	443.0		424.8		471.0		492.7		512.7		497.8		504.6		464.4		1,831.5		1,979.5		2,051.8
Operating income (loss)																	236.5		598.2		(1,999.7)
Income tax expense																	159.6		160.5		(835.5)
Net income (loss)	$ 81.5		$ (67.5)		$ 36.2		$ 80.8		$ 73.1		$ 44.5		$ (69.6)		$ 71.6		$ 131.0		$ 119.6		$ (4,012.8)
Earnings (loss) per share
Basic (in dollars per share)	$ 0.60	[7]	$ (0.49)	[7]	$ 0.26	[7]	$ 0.57	[7]	$ 0.52	[8]	$ 0.31	[8]	$ (0.49)	[8]	$ 0.50	[8]	$ 0.95		$ 0.84		$ (28.01)
Diluted (in dollars per share)	$ 0.60	[7]	$ (0.49)	[7]	$ 0.26	[7]	$ 0.57	[7]	$ 0.52	[8]	$ 0.31	[8]	$ (0.49)	[8]	$ 0.50	[8]	$ 0.95		$ 0.84		$ (28.01)
Adjustments | ASU 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales																	$ (5.1)
Cost of sales																	(2.4)
Gross profit																	(2.7)
Operating income (loss)																	(2.7)
Income tax expense																	0.1
Net income (loss)																	$ (2.8)
Earnings (loss) per share
Basic (in dollars per share)																	$ (0.02)
Diluted (in dollars per share)																	$ (0.02)
Balances without adoption of ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales																	$ 4,726.6
Cost of sales																	2,897.8
Gross profit																	1,828.8
Operating income (loss)																	233.8
Income tax expense																	159.7
Net income (loss)																	$ 128.2
Earnings (loss) per share
Basic (in dollars per share)																	$ 0.93
Diluted (in dollars per share)																	$ 0.93

[1] Includes of $221.8 million and of $18.0 million

[2] Includes of $53.2 million.

[3] Includes of $3.3 million, and of $4.0 million.

[4] Includes of $18.5 million, and of $135.2 million.

[5] Includes of $12.2 million, of $21.8 million, and restructuring expense of $38.7 million.

[6] (1)    The net sales by geography is derived from the location of the entity that sells to a third party.

[7] The sum of individual per share amounts may not equal due to rounding.

[8] The sum of individual per share amounts may not equal due to rounding.