Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. Federal statutory rate	$ 137.5	$ 127.8	$ 33.5
Impacts of Tax Cuts and Jobs Act Enactment	0.0	7.8	303.6
Foreign earnings subject to different tax rates	(137.7)	(154.9)	(74.5)
Capital loss on internal restructuring	0.0	0.0	(45.3)
State and local income taxes, less federal income tax benefit	(2.9)	1.4	(1.5)
Manufacturer's production deduction and miscellaneous tax credits	(3.8)	(3.7)	(8.4)
Tax on dividends, deemed dividends, and GILTI	46.8	45.5	10.6
Changes to unrecognized tax benefits	(5.4)	2.7	6.7
Nondeductible expenses	3.5	12.4	14.2
Change in valuation allowance	49.9	7.4	(29.3)
Exchange gains and losses	(2.1)	5.7	28.1
Other	25.7	18.7	(8.8)
Total	111.5	70.8	$ 228.9
Tax expense associated with GILTI provision	41.6	$ 43.8
Net operating losses with limited carryforward	$ 21.0