Equity (Issuances) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	9 Months Ended
	Oct. 11, 2023	Sep. 30, 2023	Sep. 30, 2023	Aug. 31, 2022
Equity
Preferred stock redemption amount	$ 750
Series A
Equity
Preferred stock, dividend rate, (as a percent)	5.375%
Liquidation preference	$ 915
Liquidation value (in dollars per share)	$ 1,000
Series B
Equity
Preferred stock, dividend rate, (as a percent)	5.00%
Liquidation preference	$ 895
Liquidation value (in dollars per share)	$ 1,000
At-the-market Program (ATM)
Equity
Aggregate sale price				$ 500
Stock compensation awards
Equity
Stock issued (in shares)		204,724	1,013,203
Proceeds received, net of offering costs		$ 11	$ 50
In lieu of dividend payment
Equity
Stock issued (in shares)		61,922	189,927
Proceeds received, net of offering costs		$ 4	$ 13
401(K)
Equity
Stock issued (in shares)		20,400	90,400
Proceeds received, net of offering costs		$ 1	$ 6
Employee Stock Purchase Plan
Equity
Stock issued (in shares)		29,442	55,923
Proceeds received, net of offering costs		$ 2	$ 4
Voluntary Cash Purchase
Equity
Stock issued (in shares)			9,905
Proceeds received, net of offering costs			$ 1