Fair Value of Other Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Obligations - Carrying Value	$ 34,670	$ 21,728
Debt Instrument, Fair Value Disclosure	36,047	24,658
Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Obligations - Carrying Value	32,072	21,723
Debt Instrument, Fair Value Disclosure	33,449	24,653
Commercial Paper Programs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Obligations - Carrying Value	2,522
Debt Instrument, Fair Value Disclosure	2,522
Other Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Obligations - Carrying Value	76	5
Debt Instrument, Fair Value Disclosure	$ 76	$ 5