Leases Lessor (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lessor, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 278,000,000	$ 275,000,000
Sales-type Lease, Variable Lease Income	3,000,000	5,000,000
Sales-type Lease, Interest Income	15,000,000	2,000,000
Operating Lease, Lease Income	595,000,000	580,000,000
Lease Income	520,000,000	514,000,000
Variable Lease, Income	75,000,000	66,000,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	8,486,000,000	8,472,000,000
Sales-type and Direct Financing Leases, Lease Receivable, Fiscal Year Maturity [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Next Twelve Months	20,000,000
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years	20,000,000
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years	21,000,000
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years	21,000,000
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years	21,000,000
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter	315,000,000
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	418,000,000
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount	198,000,000
Sales-type and Direct Financing Leases, Lease Receivable	220,000,000
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
Lessor, Operating Lease, Payments to be Received, Next Twelve Months	460,000,000
Lessor, Operating Lease, Payments to be Received, Two Years	398,000,000
Lessor, Operating Lease, Payments to be Received, Three Years	398,000,000
Lessor, Operating Lease, Payments to be Received, Four Years	399,000,000
Lessor, Operating Lease, Payments to be Received, Five Years	282,000,000
Lessor, Operating Lease, Payments to be Received, Thereafter	747,000,000
Lessor, Operating Lease, Payments to be Received	2,684,000,000
Distributed Energy [Member]
Lessor, Lease, Description [Line Items]
Sales-type Lease, Selling Profit (Loss)	(13,000,000)
Property, Plant and Equipment [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	2,423,000,000	3,103,000,000
Assets
Lessor, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	1,658,000,000	2,092,000,000
Accumulated Amortization on PP&E [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 765,000,000	$ 1,011,000,000