CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 524	$ 410	$ 1,259	$ 982
Other Comprehensive Income
Net unrealized gains (losses) on available-for-sale securities (net of taxes of $0, $0, $1, and $2, respectively)	0	0	(1)	5
Total other comprehensive income (loss)	0	0	(1)	5
Comprehensive Income	524	410	1,258	987
Preferred stock dividend requirement of subsidiary	4	4	7	7
Comprehensive Income (Loss) Attributable to Common Shareholders	$ 520	$ 406	$ 1,251	$ 980