Other Income and Expense - Other Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Schedule of Other Nonoperating Income [Line Items]
Other Nonoperating Income	$ 14	$ 70	$ 24	$ 76
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Other Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Expenses	Other Expenses	Other Expenses	Other Expenses
Other Expenses	$ 12	$ 29	$ 26	$ 41
Other Income [Member]
Schedule of Other Nonoperating Income [Line Items]
Insurance proceeds (2)	0	(16)	0	(16)
Gain (Loss) on Disposition of Other Assets	0	0	2	0
Other income	11	12	13	15
Other Nonoperating Income	14	70	24	76
Allowance for Funds Used During Construction, Capitalized Interest	3	2	6	5
Litigation Settlement, Amount Awarded from Other Party	0	6	3	6
Proceeds, Financing Receivable, Previously Written Off, Recovery	0	5	0	5
Asset Acquisition of a VIE, Contingent Consideration, Remeasurement Gain	0	3	0	3
Other Income [Member] | Valuation, Market Approach
Schedule of Other Nonoperating Income [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	0	26	0	26
Other Expense [Member]
Schedule of Other Nonoperating Income [Line Items]
Gain (Loss) on Disposition of Other Assets	7	5	9	9
Loss Contingency Accrual	1	0	8	0
Sales-type and Direct Financing Leases, Profit (Loss)	0	20	0	20
Other Nonoperating Expense	1	4	2	12
Other Expenses	$ 12	$ 29	$ 26	$ 41