Supplemental Information (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Supplemental Information [Abstract]
Gross receivables aged less than one year	$ 4,808		$ 4,425
Gross receivables aged greater than one year	278		329
Other receivables	158		150
Accounts receivable - net	4,845		4,499
Allowance for credit loss	399		405
Provisions for expected credit losses	35	$ 39
Inventories
Raw materials and supplies	440		399
Work in process	318		334
Finished goods	1,008		1,000
Total inventories	$ 1,766		$ 1,733

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