Financing Activities (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 850
Secured Debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.125%
Debt Instrument, Face Amount	$ 500
Debt Related Commitment Fees and Debt Issuance Costs	$ 6
Senior Note 2033 | Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Debt Instrument, Face Amount	$ 400
Debt Related Commitment Fees and Debt Issuance Costs	$ 4
Senior 2023 Note | Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.70%
Debt Instrument, Face Amount	$ 400