Effective Tax Rate Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Statutory rate		21.00%	35.00%	35.00%
Tax that would result from use of the federal statutory rate		$ 151.1	$ 242.4	$ 247.1
State and local income tax, net of federal effect		22.1	21.4	20.3
Varying tax rates of foreign affiliates		3.3	(0.1)	(4.1)
Benefit from domestic manufacturing deduction		0.0	(15.2)	(14.2)
Valuation Allowances		1.0	(6.2)	2.9
Stock Options Exercised		(22.1)	(15.1)	0.0
US Tax Reform	$ (273.0)	0.0	(272.9)	0.0
Other		(4.5)	(5.0)	(5.1)
Recorded tax expense		$ 150.9	$ (50.7)	$ 246.9
Effective tax rate		21.00%	(7.30%)	35.00%