Credit Losses on Financial Instruments (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance at December 31, 2021	$ 85
Provision for expected losses	47
Write-offs charged against the allowance	(58)
Recoveries collected	4
Ending balance at September 30, 2022	78
Held-for-sale, Not Discontinued Operations | EMEA Business
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for doubtful accounts	5	$ 5
Business
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance at December 31, 2021	57
Provision for expected losses	18
Write-offs charged against the allowance	(24)
Recoveries collected	3
Ending balance at September 30, 2022	54
Mass Markets
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance at December 31, 2021	28
Provision for expected losses	29
Write-offs charged against the allowance	(34)
Recoveries collected	1
Ending balance at September 30, 2022	$ 24