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Income Tax Expense (Tables)
3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
A reconciliation of income tax expense at the U.S. federal statutory rate to net income tax expense is as follow:
 
For the Three Months Ended March 31,
 
2017
 
2016
 
(in million)
Tax at statutory federal rate
$
(6
)
 
$
22

Partnership earnings not subject to tax
(10
)
 
(33
)
State and local tax, net of federal benefit
(1
)
 
11

Other

 
2

Net income tax expense (benefit)
$
(17
)
 
$
2