CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Net sales		$ 1,047.6	$ 2,154.7	$ 2,893.4	$ 4,328.7
Type of Revenue [Extensible List]		us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Cost of sales		$ (1,033.2)	$ (1,755.0)	$ (2,548.0)	$ (3,550.2)
Type of Cost, Good or Service [Extensible List]		us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit		$ 14.4	$ 399.7	$ 345.4	$ 778.5
Selling, general and administrative expenses		(98.5)	(101.1)	(192.0)	(202.5)
Research, development and engineering expenses, net		(88.0)	(117.0)	(190.6)	(224.4)
Amortization of intangibles		(2.4)	(2.9)	(5.1)	(5.7)
Other income (expense), net		(59.0)	(9.2)	(56.9)	(3.2)
Operating (loss) income		(233.5)	169.5	(99.2)	342.7
Income from equity method investment		0.0	0.2	0.3	1.2
Interest income		1.4	1.0	2.6	2.0
Interest expense		(15.8)	(17.5)	(32.1)	(35.5)
Other non-operating items, net		1.3	(2.4)	(6.8)	(6.0)
(Loss) income before income taxes		(246.6)	150.8	(135.2)	304.4
Income tax benefit (expense)		72.3	(41.4)	35.8	(83.5)
Net (loss) income		(174.3)	109.4	(99.4)	220.9
Less: Net income attributable to non-controlling interest		0.4	0.3	0.5	0.4
Net (loss) income attributable to controlling interest		$ (174.7)	$ 109.1	$ (99.9)	$ 220.5
Net (loss) earnings per share – basic	[1]	$ (2.00)	$ 1.25	$ (1.14)	$ 2.53
Net (loss) earnings per share – diluted	[1],[2]	$ (2.00)	$ 1.25	$ (1.14)	$ 2.52
Weighted average number of shares outstanding, net of treasury shares (in millions)	[3]	87.3	87.2	87.3	87.2
Weighted average number of shares outstanding, assuming dilution and net of treasury shares (in millions)	[2]	87.3	87.3	87.3	87.4
Cash dividend per share – declared	[4]	$ 0.00	$ 0.62	$ 0.00	$ 1.24
Cash dividend per share – paid		$ 0.00	$ 0.62	$ 0.62	$ 1.24

[1] Participating share awards with the right to receive dividend equivalents are (under the two-class method) excluded from the earnings per share calculation (see Note 11 to the unaudited condensed consolidated financial statements).

[2] Shares in the diluted loss per share calculation for the three and six month periods ended June 30, 2020 represent basic shares due to the net loss.

[3] The Company’s unvested RSUs and PSUs, of which some included the right to receive non-forfeitable dividend equivalents, are considered participating securities. Calculations of EPS under the two-class method exclude from the numerator any dividends paid or owed on participating securities and any undistributed earnings considered to be attributable to participating securities. The related participating securities are similarly excluded from the denominator

[4] On February 20, the Company declared a dividend of $0.62 per share for the second quarter of 2020. On April 2, 2020, the Company canceled its declared dividend for the second quarter of 2020.