Subsequent Events (Details) - Subsequent Event - Senior Notes $ in Millions	Feb. 11, 2022 USD ($)	Jan. 18, 2022	Jan. 06, 2022 USD ($)
Senior Bank Notes Due February 17, 2022
Debt Instrument [Line Items]
Debt instrument, face amount			$ 1,250
Debt instrument, distribution rate, percentage		2.625%
Debt instrument, redemption ratio		1
Senior Notes Due March 8, 2022
Debt Instrument [Line Items]
Debt instrument, face amount			$ 1,000
Debt instrument, distribution rate, percentage			3.30%
Debt instrument, redemption ratio			1
Senior Floating Rate Bank Notes Due February 24, 2023
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,000
Debt instrument, redemption ratio	1
Senior Bank Notes Due February 24, 2023
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500
Debt instrument, distribution rate, percentage	1.743%
Debt instrument, redemption ratio	1