Income Taxes (Schedule of Composition of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 938.5	$ 567.6	$ 280.2
Foreign	466.0	650.4	299.8
State	(28.4)	(47.3)	(14.4)
Total current tax expense	1,376.1	1,170.7	565.6
Deferred:
Federal	(977.5)	(97.4)	141.3
Foreign	174.6	(16.6)	(24.1)
State	0.6	(20.5)	(54.8)
Total deferred tax (benefit) expense	(802.3)	(134.5)	62.4
Income taxes	573.8	1,036.2	628.0
Current federal tax expense, utilization of net operating loss carryforward	$ 64.7	$ 144.4	$ 153.1