CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Comprehensive income:
Net income	$ 302	$ 288	$ 790	$ 706
Reclassifications of losses to net income, net of tax	4	1	4	1
Derivative instruments:
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	0	13	22	8
Reclassification of losses to net income, net of tax	0	1	1	2
Total other comprehensive income	4	15	27	11
Total comprehensive income	$ 306	$ 303	$ 817	$ 717