Spirit Acquisition (Details) $ / shares in Units, $ in Millions		12 Months Ended
	Jun. 30, 2025 USD ($) extension_period $ / shares shares	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2025 USD ($)	Jan. 22, 2025 USD ($)
Business Acquisition [Line Items]
Business combination, amount due, liability					$ 515
Business combination, liability repayment, year one, adjustment					$ 425
Spirit AeroSystems Holdings, Inc.
Business Acquisition [Line Items]
Business combination, maximum financial support amount		$ 1,067	$ 1,067
Business combination, financial support amount, not yet drawn				$ 166
Business combination, other assets, current		539		24
Business combination, other assets		299		784
Business combination, inventory advance payment		$ 165		$ 162
Forecast
Business Acquisition [Line Items]
Business combination, termination rights, number of three-month extension periods | extension_period	3
Business combination, termination rights, cured duration	30 days
Forecast | Spirit AeroSystems Holdings, Inc.
Business Acquisition [Line Items]
Business combination, consideration transferred	$ 4,700
Business acquisition, share price (in dollars per share) | $ / shares	$ 37.25
Business acquisition, trading day	15 days
Business acquisition, buyer termination fee	$ 300
Forecast | Spirit AeroSystems Holdings, Inc. | Minimum
Business Acquisition [Line Items]
Business acquisition, exchange ratio	18.00%
Business acquisition, floor price per share (in dollars per share) | $ / shares	$ 149.00
Business acquisition, equity interest issued or issuable, number of shares (in shares) | shares	0.25
Forecast | Spirit AeroSystems Holdings, Inc. | Maximum
Business Acquisition [Line Items]
Business acquisition, exchange ratio	25.00%
Business acquisition, ceiling price per share (in dollars per share) | $ / shares	$ 206.94
Business acquisition, equity interest issued or issuable, number of shares (in shares) | shares	0.18