Debt (Accounts Receivable Securitization Facility Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2022	Dec. 31, 2021
AmendedRestatedReceivableSecuritizationFacility [Member] \| Secured Debt [Member]
Line of Credit Facility [Line Items]
Percentage of fair value of sales receivables	100.00%
Secured Debt [Member] \| AmendedRestatedReceivableSecuritizationFacility [Member]
Line of Credit Facility [Line Items]
Transfer of financial assets accounted for as sales, amount derecognized	$ 262	$ 1,100
Proceeds collected on accounts receivable sold under factoring facilities	262	$ 1,100
Cash flows between transferor and transferee, proceeds from new transfers	$ 103

Amount of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction, at the date of derecognition.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719

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