Allowance for Losses on Financial Assets - Schedule of Financial Assets, Allowance for Credit Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Account receivable, allowance for credit loss, beginning balance	$ (89)	$ (116)
Unbilled receivables, allowance for credit loss, beginning balance	(19)	(23)
Allowance for credit loss, beginning balance	(331)	(367)
Customer financing, allowance for credit loss, beginning balance	(51)	(55)
Accounts receivable, changes in estimates	(45)	(6)
Unbilled receivables, changes in estimates	(19)	4
Changes in estimates	(113)	(2)
Customer financing, changes in estimates	44	4
Accounts receivable, write-offs	41	29
Write-offs	60	34
Accounts receivable, recovery	1	4
Recoveries	1	4
Account receivable, allowance for credit loss, ending balance	(92)	(89)
Unbilled receivables, allowance for credit loss, ending balance	(38)	(19)
Allowance for credit loss, ending balance	(383)	(331)
Customer financing, allowance for credit loss, ending balance	(7)	(51)
Other Current Assets
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Changes in estimates	8	30
Write-offs	11	5
Other Assets
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Changes in estimates	(85)	(34)
Write-offs	8
Other Current Assets
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning balance	(50)	(85)
Allowance for credit loss, ending balance	(47)	(50)
Other Assets
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning balance	(122)	(88)
Allowance for credit loss, ending balance	$ (199)	$ (122)