Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2020
Income Tax Contingency [Line Items]
Effective tax rate	73.00%	26.10%	(91.00%)
Income tax (benefit) provision	$ 148.2	$ 734.6	$ 604.7
Deferred tax liability not recognized, amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries	$ 1,180.0
Statutory tax rate	21.00%	21.00%	21.00%
Valuation allowance, amount	$ 421.4	$ 387.0
Expected foreign tax credits	150.8
Unrecognized tax benefit	272.8	296.7	$ 322.9		$ 391.1
Unrecognized tax benefits that impact effective tax rate	191.4
Accrued interest and penalties	115.7	106.4
Interest expense (income) related to uncertain tax positions	15.4		21.1	$ 18.5
Amount of unrecognized deferred tax liability	40.0
Unrecognized tax benefit — beginning of year	272.8	296.7	$ 322.9		$ 391.1
Reserve for Uncertain Tax Positions, Including Interest And Penalties	287.1	298.1
PUERTO RICO
Income Tax Contingency [Line Items]
Operating loss carryforwards expired in period	274.4
U.S. Federal Tax Authority
Income Tax Contingency [Line Items]
Net operating loss carryforwards	281.9
U.S. State Tax Authority
Income Tax Contingency [Line Items]
Net operating loss carryforwards	3,400.0
Foreign
Income Tax Contingency [Line Items]
Net operating loss carryforwards	879.4
Credit carryforward	208.5
Foreign | Australian Taxation Office
Income Tax Contingency [Line Items]
Partial payment of anticipated tax expense	5.2	$ 56.0
Foreign | Ministry of Finance, India
Income Tax Contingency [Line Items]
Income tax (benefit) provision	22.3
Indefinite | Foreign
Income Tax Contingency [Line Items]
Net operating loss carryforwards	718.1
2016 through 2035 | Foreign
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 161.3