Income Tax Expense (Tables)

9 Months Ended

Sep. 30, 2020

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

A reconciliation of income tax expense from continuing operations at the U.S. federal statutory rate of 21% to net income tax expense is as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in millions)
Income tax expense at statutory federal rate	$	22	$	15	$	31	$	50
Partnership earnings not subject to tax	(18)		(10)		(20)		(46)
State and local tax, net of federal benefit	1		—		4		—
Other	—		1		1		5
Net income tax expense	$	5	$	6	$	16	$	9