Debt and Other Financing Arrangements - Accounts Receivable Securitization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Accounts receivable outstanding and derecognized	$ 1,000	$ 1,000
Cash proceeds received for assets derecognized, amount	500	400
Deferred purchase price receivable	51	51
Proceeds from factoring qualifying as sales	5,200	4,100	$ 5,000
Accounts receivable qualifying as sales and drafting programs, amount	3,900	3,300	4,200
Interest Expense
Debt Instrument [Line Items]
Loss on sale of receivables	$ 19	$ 20	$ 31