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Supplemental Cash Flow Information (Tables) | 9 Months Ended
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Sep. 30, 2018
Supplemental Cash Flow Elements [Abstract] |
Net Effects of Changes in Operating Assets and Liabilities, Net, on Cash Flows from Operating Activities | The net effects of changes in operating assets and liabilities, net of non-cash transactions, on cash flows from operating activities are as follows (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Accounts and notes receivable |  | $ | (169,041 | ) |  | $ | (272,131 | ) |  | $ | (345,842 | ) |  | $ | (398,574 | )
Contract assets |  | (125,878 | ) |  | 20,981 |  |  | (188,996 | ) |  | (126,999 | )
Inventories |  | (8,436 | ) |  | 13,525 |  |  | (13,841 | ) |  | 8,727 |
Prepaid expenses and other current assets |  | 12,991 |  |  | 10,495 |  |  | (45,002 | ) |  | (23,142 | )
Accounts payable and accrued expenses and other non-current liabilities |  | 170,469 |  |  | 203,607 |  |  | 294,259 |  |  | 216,651 |
Contract liabilities |  | (48,386 | ) |  | 43,836 |  |  | 22,676 |  |  | 80,042 |
Other, net |  | (2,291 | ) |  | (6,621 | ) |  | (8,270 | ) |  | 12,813 |
Net change in operating assets and liabilities, net of non-cash transactions |  | $ | (170,572 | ) |  | $ | 13,692 |  |  | $ | (285,016 | ) |  | $ | (230,482 | )
Reconciliation of Cash, Cash Equivalents, and Restricted Cash and Additional Supplemental Cash Flow Information | A reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets that sum to the total of such amounts shown in the statements of cash flows are as follows (in thousands).
|  | September 30,
|  | 2018 |  | 2017
Cash and cash equivalents |  | $ | 113,524 |  |  | $ | 91,532 |
Restricted cash included in “Prepaid expenses and other current assets” |  | 3,275 |  |  | 3,286 |
Restricted cash included in “Other assets, net” |  | 1,375 |  |  | 416 |
Total cash, cash equivalents, and restricted cash reported in the statements of cash flows |  | $ | 118,174 |  |  | $ | 95,234 |
|  | June 30,
|  | 2018 |  | 2017
Cash and cash equivalents |  | $ | 120,357 |  |  | $ | 99,565 |
Restricted cash included in “Prepaid expenses and other current assets” |  | 2,926 |  |  | 2,627 |
Restricted cash included in “Other assets, net” |  | 1,454 |  |  | 416 |
Total cash, cash equivalents, and restricted cash reported in the statements of cash flows |  | $ | 124,737 |  |  | $ | 102,608 |
|  | December 31,
|  | 2017 |  | 2016
Cash and cash equivalents |  | 138,285 |  |  | $ | 112,183 |
Restricted cash included in “Prepaid expenses and other current assets” |  | 5,106 |  |  | 1,709 |
Restricted cash included in “Other assets, net” |  | 384 |  |  | 518 |
Total cash, cash equivalents, and restricted cash reported in the statements of cash flows |  | $ | 143,775 |  |  | $ | 114,410 |
Additional supplemental cash flow information is as follows (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Cash (paid) received during the period for — |  |  |  |  |  |  |  |
Interest paid |  | $ | (9,279 | ) |  | $ | (5,808 | ) |  | $ | (24,011 | ) |  | $ | (13,314 | )
Income taxes paid |  | $ | (38,445 | ) |  | $ | (3,616 | ) |  | $ | (91,000 | ) |  | $ | (105,112 | )
Income tax refunds |  | $ | 1,207 |  |  | $ | 5,058 |  |  | $ | 3,570 |  |  | $ | 7,727 |

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- Definition Tabular disclosure of the net increase (decrease) in operating capital in the operating section of the statement of cash flows, represents the entire footnote disclosure that provides details regarding the net change during the reporting period of all assets and liabilities used in operating activities. + 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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- References No definition available. + Details
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