Credit Losses on Financial Instruments - Finance Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss
Beginning balance	$ 38	$ 61
Provision for expected losses	60	27
Write-offs charged against the allowance	(64)	(54)
Recoveries collected	2	4
Ending balance	36	38
Business
Financing Receivable, Allowance for Credit Loss
Beginning balance	19	25
Provision for expected losses	13	10
Write-offs charged against the allowance	(14)	(19)
Recoveries collected	2	3
Ending balance	20	19
Mass Markets
Financing Receivable, Allowance for Credit Loss
Beginning balance	19	36
Provision for expected losses	47	17
Write-offs charged against the allowance	(50)	(35)
Recoveries collected	0	1
Ending balance	$ 16	$ 19