Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income taxes at U.S. statutory rate of 21% (35% for 2016 and 2017)									$ 251.2	$ 372.3	$ 330.0
State taxes, net of federal benefit									5.6	2.3	1.8
U.S. tax on non-U.S. earnings									36.5	170.6	32.2
Affiliates' earnings									(10.3)	(17.9)	(15.0)
Foreign rate differentials									27.5	(100.2)	(93.3)
Tax holidays									(28.0)	(31.0)	(25.5)
Net tax on remittance of foreign earnings									(21.5)	80.3	21.8
Tax credits									(26.0)	(24.2)	(3.2)
Reserve adjustments, settlements and claims									32.5	8.0	11.6
Valuation allowance adjustments	$ (9.1)								(10.6)	12.2	(2.7)
Non-deductible transaction costs									2.6	10.9	8.3
Provision to return and other one-time tax adjustments									(29.8)	(1.9)	0.3
Impact of transactions									(0.1)	4.0	16.3
Other foreign taxes									8.4	8.1	12.9
Revaluation of U.S. deferred taxes									(4.2)	63.7	0.0
Effective rate reconciliation, FDII									(15.3)	0.0	0.0
Other									(7.2)	23.1	10.5
Provision for income taxes	19.2	$ 66.8	$ 30.4	$ 94.9	$ 338.4	$ 79.4	$ 76.2	$ 86.3	$ 211.3	$ 580.3	306.0
U.S. Federal Corporate Tax Rate prior to the Tax Cuts and Jobs Act										35.00%
U.S. Federal Corporate Tax Rate After the Tax Cuts and Jobs Act									21.00%
Effective tax rate reconciliation, GILTI									$ 28.9
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability										$ 104.7
Income tax expense, revaluation of deferred tax assets and liabilities due to change of tax law										74.7
Income tax expense related to executive compensation due to change of tax law										11.0
Increase of deferred tax liabilities, future remittance of foreign earnings, due to the Act										94.1
Tax benefit associated with restructuring	(5.5)	(1.3)	(7.6)	(0.6)	(8.9)	(1.2)			(15.0)	(10.1)	(6.0)
Tax benefit associated with merger and acquisition expense	(0.1)			(0.3)	(0.7)	(0.3)			(0.3)	(1.0)
Tax expenses (benefits) associated with asbestos-related adjustments	(5.5)								(5.5)		17.5
Tax benefit associated with asset impairment expense	(7.7)				(18.2)				(7.7)	(18.2)
Tax expense on gain from customer contract expiration				0.9					0.9		2.2
Effective Income Tax Rate Reconciliation, Disposition of Asset, Amount	5.8								5.8
Effective rate reconciliation, measurement period adjustments due to the Tax Act	7.4	(6.6)	(13.4)						(12.6)
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount	(0.4)	(0.5)	(21.1)						(22.0)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount									(9.1)
Effective income tax rate reconciliation, tax reserve adjustments	(2.8)								(2.8)
Tax benefits associated with loss on divestiture											(22.7)
Tax impact of other tax adjustments	$ (18.5)	$ (1.8)	$ (9.9)	$ 0.4	$ 7.9	$ (5.1)	$ (3.2)	$ 3.4	$ (29.8)	$ (3.8)	(8.6)
Tax benefits associated with intangible asset impairment											$ (4.4)