Credit Losses on Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance at December 31, 2021	$ 85
Provision for expected losses	27
Write-offs charged against the allowance	(30)
Recoveries collected	2
Ending balance at September 30, 2022	84
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	12
Write-offs charged against the allowance	(12)
Recoveries collected	2
Ending balance at September 30, 2022	59
Mass Markets
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance at December 31, 2021	28
Provision for expected losses	15
Write-offs charged against the allowance	(18)
Recoveries collected	0
Ending balance at September 30, 2022	$ 25