Commitments and Contingencies - Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 27	$ 31
Finance Lease, Right-of-Use Asset, Amortization	1	1
Finance Lease, Interest Expense	4	4
Finance Lease, Cost	5	5
Lessee, Operating Lease, Liability, Payments, Due	509
Total minimum obligation	432
Interest component of obligation	(54)
Finance Lease, Liability, Undiscounted Excess Amount	(316)
Operating Lease, Liability	455
Finance Lease, Liability	116
Less current portion	(90)		$ (80)
Less current portion	(3)
Operating lease liabilities	365		$ 379
Noncurrent operating and finance lease liabilities	113
PPAs
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	22	25
Lessee, Operating Lease, Liability, Payments, Due	437
Interest component of obligation	(46)
Operating Lease, Liability	391
Other
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	5	$ 6
Lessee, Operating Lease, Liability, Payments, Due	72
Interest component of obligation	(8)
Operating Lease, Liability	$ 64