Allowances for Losses on Financial Assets - Schedule of Financial Assets, Allowance for Credit Loss (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Account receivable, allowance for credit loss, beginning balance	$ (76)	$ (92)
Unbilled receivables, allowance for credit loss, beginning balance	(42)	(38)
Allowance for credit loss, beginning balance	(272)	(383)
Financing receivables, allowance for credit loss, beginning balance	0	(7)
Accounts receivable, changes in estimates	(9)	(4)
Unbilled receivables, changes in estimates	10	(5)
Changes in estimates	(13)	(59)
Customer financing, changes in estimates		3
Accounts receivable, write-offs	3	7
Write-offs	10	8
Accounts receivable, recoveries		1
Recoveries	1	1
Accounts receivable, other		11
Account receivable, allowance for credit loss, ending balance	(82)	(77)
Unbilled receivables, allowance for credit loss, ending balance	(32)	(43)
Allowance for credit loss, ending balance	(274)	(422)
Financing receivables, allowance for credit loss, ending balance	0	(4)
Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssetsCurrent
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning balance	(43)	(47)
Allowance for credit loss, ending balance	(42)	(55)
Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssetsNoncurrent
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning balance	(111)	(199)
Allowance for credit loss, ending balance	(118)	(243)
Location, Statement of Financial Position, Activity, Accrual [Axis]: us-gaap:OtherAssetsCurrent
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Changes in estimates		(9)
Write-offs	1	1
Location, Statement of Financial Position, Activity, Accrual [Axis]: us-gaap:OtherAssetsNoncurrent
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Changes in estimates	(14)	$ (44)
Write-offs	6
Recoveries	$ 1

Accounts Receivable, Allowance For Credit Loss, Other

No definition available.

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- Definition

Amount of expense (reversal of expense) for expected credit loss

+ References

No definition available.

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- Definition

Amount of increase in allowance for credit loss, from recovery.

+ References

No definition available.

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- Definition

Amount of allowance for credit loss

+ References

No definition available.

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- Definition

Amount of direct write-downs charged against the allowance

+ References

No definition available.

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- Definition

Amount of allowance for credit loss on accounts receivable.

+ References

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- Definition

Amount of increase in allowance for credit loss on accounts receivable, from recovery.

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- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

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- Definition

Amount of allowance for credit loss for right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of expense (reversal of expense) for expected credit loss on right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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- Definition

Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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