Contracts with Customers - Schedule of Unbilled Receivables and Claims) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Contracts with Customers [Abstract]
Contract with customers, unbilled, current		$ 6,565		$ 6,478
Contract with customers, expected to be collected after one year		1,771		2,179
Contract with customers, less valuation allowance	$ (20)	(19)	$ (21)	(23)	$ (91)
Total unbilled receivables	$ 9,660	8,317		8,634
Contracts with customers, claims, current		6
Contract with customers, claims, expected to be collected after one year		40		16
Total claims receivables		$ 46		$ 16

Contracts with Customers [Abstract]

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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

Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right to consideration is unconditional, classified as current.

+ References

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- Definition

Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right to consideration is unconditional, classified as noncurrent.

+ References

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- Definition

Amount of billed or unbilled claims or other similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts.

+ References

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- Definition

Amount of billed or unbilled claims or similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts that are expected to be collected after the next fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of billed or unbilled claims or similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts that are expected to be collected in the next fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

+ References

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