Supplemental Information - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Supplemental Information [Abstract]
Gross receivables aged less than one year	$ 4,637		$ 4,498
Gross receivables aged greater than one year	346		321
Other receivables	155		145
Accounts receivable, net of reserves	4,692		4,559
Allowances for expected credit losses	446		$ 405
Provisions for expected credit losses	$ 123	$ 112