CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Comprehensive income:
Net income	$ 134	$ 108	$ 301	$ 237
Derivative instruments:
Reclassification of loss to net income, net of tax of $—, $—, $— and $—, respectively	0	0	1	1
Total other comprehensive income	0	0	1	1
Total comprehensive income	$ 134	$ 108	$ 302	$ 238