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Supplemental Cash Flow Information (Tables) | 6 Months Ended
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Jun. 30, 2018
Schedule of Cash, Cash Equivalents and Restricted Cash [Line Items] |
Schedule of Cash, Cash Equivalents and Restricted Cash [Table Text Block] | The reconciliation of cash, cash equivalents, and restricted cash reported within various lines on the condensed consolidated balance sheet to amounts reported in the condensed consolidated statement of cash flows is shown below.
| June 30, 2018 |  | December 31, 2017
Cash and cash equivalents | $ | 206 |  |  | $ | 314 |
Restricted cash, current | 125 |  |  | 121 |
Restricted cash reported within long-term prepaid rent and other assets, net | 5 |  |  | 5 |
Cash, cash equivalents and restricted cash | $ | 336 |  |  | $ | 440 |
Supplemental Disclosure of Cash Flow Information and Non-cash Investing and Financing Activities |
| Six Months Ended June 30,
| 2018 |  | 2017
Supplemental disclosure of cash flow information: |  |  |
Interest paid | $ | 292 |  |  | $ | 260 |
Income taxes paid | 12 |  |  | 10 |
Supplemental disclosure of non-cash investing and financing activities: |  |  |
Increase (decrease) in accounts payable for purchases of property and equipment | 22 |  |  | (8 | )
Purchase of property and equipment under capital leases and installment purchases | 17 |  |  | 18 |
Preferred stock dividends declared but not paid (see note 10) | 28 |  |  | — |

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- Definition [Line Items] for Schedule of Cash, Cash Equivalents and Restricted Cash [Table] + References No definition available. + Details
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- Definition [Table Text Block] for Schedule of Cash, Cash Equivalents and Restricted Cash [Table] + References No definition available. + Details
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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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