Debt - Commercial Paper Program (Details) - Commercial Paper	12 Months Ended
Dec. 31, 2021 USD ($)
Line of Credit Facility [Line Items]
Principal Amount Issued	$ 3,400,000,000
Repayments of short-term debt	3,400,000,000
Commercial paper, amount outstanding	$ 0

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant