Debt - Commercial Paper Program (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Term of facility	2 months	1 month
Weighted-average interest rate (as a percent)	0.32%	0.30%
Commercial Paper Program
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,500,000,000	$ 1,000,000,000
Short-term debt	$ 1,170,000,000	$ 130,000,000

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
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Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant