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Net Parent Investment (Tables)
 12 Months Ended
Dec. 31, 2017
Related Party Transactions [Abstract]  
Components of Net Transfers (to) from Parent on the Consolidated Statements of Cash Flows and Consolidated Statements of Equity

The components of the Net transfers (to) from Parent on the consolidated statements of cash flows and consolidated statements of equity were:

 

 

Year Ended December 31,

 

 

 

2017

 

 

2016

 

 

2015

 

 

 

(in millions)

 

Cash pooling and general financing activities

 

$

(9

)

 

$

(172

)

 

$

(172

)

Corporate allocations

 

 

—

 

 

 

66

 

 

 

56

 

Income taxes

 

 

(4

)

 

 

146

 

 

 

119

 

Net transfers (to) from Parent

 

$

(13

)

 

$

40

 

 

$

3