Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Line Items]
Right-of-use asset	$ 1,132	$ 1,132	$ 147
Finance lease, liability	1,148	1,148	144
Financing cash outflows from finance leases		346	$ 30	$ 36
Finance lease, liability, to be paid	1,567	1,567
Government Incentives, 48D Credits
Leases [Line Items]
Right-of-use asset, tax incentive	318	318
Financing Lease, Lease Not yet Commenced
Leases [Line Items]
Right-of-use asset, tax incentive	126	126
Operating lease not yet commenced	$ 527	$ 527
Financing Lease, Lease Not yet Commenced | Minimum
Leases [Line Items]
Finance lease not yet commenced term of contract (in years)	5 years	5 years
Financing Lease, Lease Not yet Commenced | Maximum
Leases [Line Items]
Finance lease not yet commenced term of contract (in years)	16 years	16 years
Facility Lease
Leases [Line Items]
Right-of-use asset	$ 797	$ 797
Finance lease, liability	$ 797	$ 797
Lease term (in years)	5 years	5 years
Financing cash outflows from finance leases	$ 315	$ 315
Finance lease, liability, to be paid	495	495
Facility Lease | Government Incentives, 48D Credits
Leases [Line Items]
Right-of-use asset, tax incentive	189	189
Equipment Lease
Leases [Line Items]
Right-of-use asset	541	541
Finance lease, liability	541	541
Equipment Lease | Government Incentives, 48D Credits
Leases [Line Items]
Right-of-use asset, tax incentive	$ 129	$ 129
Equipment Lease | Minimum
Leases [Line Items]
Lease term (in years)	5 years	5 years
Equipment Lease | Maximum
Leases [Line Items]
Lease term (in years)	8 years	8 years