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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract] |
Schedule of supplemental cash flow information related to income taxes, interest, construction in process and dividends | 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 |

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