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Income Tax Expense
6 Months Ended
Jun. 30, 2020
Income Tax Disclosure [Abstract]  
Income Tax Expense
Income Tax Expense
As a partnership, we are generally not subject to federal income tax and most state income taxes. However, the Partnership conducts certain activities through corporate subsidiaries which are subject to federal and state income taxes.
Our effective tax rate differs from the statutory rate primarily due to Partnership earnings that are not subject to U.S. federal and most state income taxes at the Partnership level. 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 June 30,
 
Six Months Ended June 30,
 
2020
 
2019
 
2020
 
2019
 
(in millions)
Income tax expense at statutory federal rate
$
35

 
$
13

 
$
8

 
$
35

Partnership earnings not subject to tax
(28
)
 
(10
)
 
(2
)
 
(36
)
State and local tax, net of federal benefit
1

 

 
3

 

Other

 
2

 
2

 
4

Net income tax expense
$
8

 
$
5

 
$
11

 
$
3