Supplemental Information - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Supplemental Information [Abstract]
Gross receivables aged less than one year	$ 4,700		$ 4,498
Gross receivables aged greater than one year	368		321
Other receivables	157		145
Accounts receivable - net	4,799		4,559
Allowances for expected credit losses	426		$ 405
Provisions for expected credit losses	$ 83	$ 67