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Income Taxes (Tables)
 6 Months Ended
Jun. 30, 2019
Income Tax Disclosure [Abstract]  
Schedule of Income Tax Provisions
The tax provisions for the second quarter and six months ended June 30, 2019 and 2018 were comprised of the following:
 
Second quarter ended
 
Six months ended
 
June 30,
 
June 30,
 
2019
 
2018
 
2019
 
2018
Pre-tax income at estimated annual effective income tax rate before discrete items
$
(69
)
 
$
52

 
$
22

 
$
106

Impact of change in estimated annual effective tax rate on previous quarter’s pre-tax income
24

 
1

 
—

 
—

Interim period treatment of operational losses in foreign jurisdictions for which no tax benefit is recognized
7

 
—

 
9

 
1

Other discrete items
(36
)
 
21

 
(35
)
 
23

Provision for income taxes
$
(74
)
 
$
74

 
$
(4
)
 
$
130