Fair Value Measurements (Details 1) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Notes payable, carrying value	$ 7,277.2	$ 7,273.1
Debt instruments, fair value	$ 6,546.7	8,004.7
Senior notes interest rate	3.625%
3.625% Senior Notes due 2022
Debt Instrument [Line Items]
Notes payable, fair value	$ 1,001.1	1,020.0
Notes payable, carrying value	$ 999.8	999.1
Senior notes interest rate	3.625%
4.050% Senior Notes due 2025
Debt Instrument [Line Items]
Notes payable, fair value	$ 1,730.1	1,895.2
Notes payable, carrying value	$ 1,743.8	1,742.9
Senior notes interest rate	4.05%
2.250% Senior Notes due May 1, 2030
Debt Instrument [Line Items]
Notes payable, fair value	$ 1,066.3	1,475.9
Notes payable, carrying value	$ 1,100.1	1,492.0
Senior notes interest rate	2.25%
5.200% Senior Notes due 2045
Debt Instrument [Line Items]
Notes payable, fair value	$ 1,232.2	1,463.0
Notes payable, carrying value	$ 1,492.5	1,099.9
Senior notes interest rate	5.20%
3.150% Senior Notes due May 1, 2050
Debt Instrument [Line Items]
Notes payable, fair value	$ 1,027.9	1,457.7
Notes payable, carrying value	$ 1,473.4	1,473.2
Senior notes interest rate	3.15%
3.250% Senior Notes, Due February 15, 2051
Debt Instrument [Line Items]
Notes payable, fair value	$ 489.1	692.9
Notes payable, carrying value	$ 467.6	$ 466.0
Senior notes interest rate	3.25%