CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 735	$ 572
Other Comprehensive Income (Loss)
Net unrealized gains (losses) on available-for-sale securities (net of taxes of $1 and $2, respectively)	(1)	5
Total other comprehensive income (loss)	(1)	5
Comprehensive Income (Loss)	734	577
Preferred stock dividend requirement of subsidiary	3	3
Comprehensive Income (Loss) Attributable to Common Shareholders	$ 731	$ 574