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Leases Lessee (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Lessee, Lease, Description [Line Items]    
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability   $ 37
Finance Lease, Principal Payments $ 2 2
Operating Lease, Payments 39 41
Finance Lease Liabilities, Gross Difference, Amount [Abstract]    
Finance Lease, Liability, Undiscounted Excess Amount 143  
Operating Lease Liabilities, Gross Difference, Amount [Abstract]    
Lessee, Operating Lease, Liability, Undiscounted Excess Amount 318  
Finance Lease, Liability, Payment, Due [Abstract]    
Finance Lease, Liability, Payments, Due Next Twelve Months 8  
Finance Lease, Liability, Payments, Due Year Two 9  
Finance Lease, Liability, Payments, Due Year Three 7  
Finance Lease, Liability, Payments, Due Year Four 6  
Finance Lease, Liability, Payments, Due Year Five 7  
Finance Lease, Liability, Payments, Due after Year Five 240  
Finance Lease, Liability, Payment, Due 277  
Assets and Liabilities, Lessee [Abstract]    
Finance Lease, Right-of-Use Asset 125 74
Operating Lease, Right-of-Use Asset 278 275
Right-of-use Asset, Operating and Financing 403 349
Finance Lease, Liability, Current 6 4
Finance Lease, Liability, Noncurrent 128 77
Finance Lease, Liability 134 81
Operating Lease, Liability, Current 20 17
Operating Lease, Liability, Noncurrent 294 293
Lease Liability, Operating and Financing 448 391
Operating Lease, Payments 39 41
Finance Lease, Principal Payments 2 2
Operating Lease, Liability 314 $ 310
Lessee, Operating Lease, Liability, Payment, Due [Abstract]    
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months 32  
Lessee, Operating Lease, Liability, Payments, Due Year Two 30  
Lessee, Operating Lease, Liability, Payments, Due Year Three 29  
Lessee, Operating Lease, Liability, Payments, Due Year Four 27  
Lessee, Operating Lease, Liability, Payments, Due Year Five 26  
Lessee, Operating Lease, Liability, Payments, Due after Year Five 488  
Lessee, Operating Lease, Liability, Payments, Due $ 632  
Lease, Cost [Abstract]    
Finance Lease, Weighted Average Remaining Lease Term 32 years 31 years
Operating Lease, Weighted Average Remaining Lease Term 23 years 23 years
Finance Lease, Weighted Average Discount Rate, Percent 4.65% 4.11%
Operating Lease, Weighted Average Discount Rate, Percent 6.70% 6.81%
Operating Lease, Cost $ 36 $ 36
Finance Lease, Right-of-Use Asset, Amortization 4 3
Finance Lease, Interest Expense 4 4
Short-term Lease, Cost 21 13
Variable Lease, Cost 1 0
Lease, Cost $ 66 $ 56
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Other assets Other assets
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Non Recourse Debt Current Non Recourse Debt Current
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Non Recourse Debt Non Current Non Recourse Debt Non Current
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued and other liabilities Accrued and other liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other long-term liabilities Other long-term liabilities