Income Taxes - Summary of Effective Tax Rate (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Provision computed at U.S. federal statutory rate	[1]	$ 192.6	$ 203.8	$ 290.0
Federal tax reform			(2.0)	(127.2)
State and local taxes, net of federal benefit		35.7	36.9	24.0
Domestic manufacturers deduction	[2]			(21.1)
Other		(7.7)	(6.2)	(5.7)
Total provision for taxes		$ 220.6	$ 232.5	$ 160.0

[1] U.S. federal statutory rate of 21% in 2019 and 2018 and 35% in 2017.

[2] The domestic manufacturers deduction was eliminated after 2017 as a result of the Tax Cuts and Jobs Act.