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Supplemental Cash Flow Information
12 Months Ended
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information
(12) Supplemental Cash Flow Information

Supplemental cash flow information related to income taxes, interest, and capital expenditures is as follows:
 
Year Ended December 31,
(in millions)
2018
 
2017
Supplemental disclosures:
 
Cash paid for income taxes, net of refunds
$
31

 
$
15

Cash paid for interest
103

 
106

Non-cash investing and financing activities:
 
 
 
Construction in progress additions included in accounts payable
$
17

 
$
8

Change in accounts payable related to construction in progress additions
9

 
(5
)
Landlord incentives for leasehold improvements

 
1