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Supplemental Cash Flow Information (Tables) | 9 Months Ended
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Sep. 30, 2019
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,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Accounts and notes receivable |  | $ | (479,573 | ) |  | $ | (169,041 | ) |  | $ | (695,364 | ) |  | $ | (345,842 | )
Contract assets |  | 34,016 |  |  | (125,878 | ) |  | (67,882 | ) |  | (188,996 | )
Inventories |  | 1,511 |  |  | (8,436 | ) |  | 43,598 |  |  | (13,841 | )
Prepaid expenses and other current assets |  | (8,048 | ) |  | 12,991 |  |  | (110,622 | ) |  | (45,002 | )
Accounts payable and accrued expenses and other non-current liabilities |  | 250,608 |  |  | 170,469 |  |  | 228,473 |  |  | 294,259 |
Contract liabilities |  | 68,535 |  |  | (48,386 | ) |  | 112,545 |  |  | 22,676 |
Other, net (1) |  | (4,957 | ) |  | (2,291 | ) |  | (134,305 | ) |  | (8,270 | )
Net change in operating assets and liabilities, net of non-cash transactions |  | $ | (137,908 | ) |  | $ | (170,572 | ) |  | $ | (623,557 | ) |  | $ | (285,016 | )
(1) The amount for the nine months ended September 30, 2019 includes the payment of $87 million of on-demand advance payment bonds and $25 million of on-demand performance bonds exercised in connection with the termination of a large telecommunications project in Peru. See Legal Proceedings — Peru Project Dispute in Note 11 for additional information on this matter.
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 is as follows (in thousands):
|  | September 30,
|  | 2019 |  | 2018
Cash and cash equivalents |  | $ | 80,044 |  |  | $ | 113,524 |
Restricted cash included in “Prepaid expenses and other current assets” |  | 3,441 |  |  | 3,275 |
Restricted cash included in “Other assets, net” |  | 1,026 |  |  | 1,375 |
Total cash, cash equivalents, and restricted cash reported in the statements of cash flows |  | $ | 84,511 |  |  | $ | 118,174 |
|  | June 30,
|  | 2019 |  | 2018
Cash and cash equivalents |  | $ | 73,356 |  |  | $ | 120,357 |
Restricted cash included in “Prepaid expenses and other current assets” |  | 3,733 |  |  | 2,926 |
Restricted cash included in “Other assets, net” |  | 1,028 |  |  | 1,454 |
Total cash, cash equivalents, and restricted cash reported in the statements of cash flows |  | $ | 78,117 |  |  | $ | 124,737 |
|  | December 31,
|  | 2018 |  | 2017
Cash and cash equivalents |  | $ | 78,687 |  |  | $ | 138,285 |
Restricted cash included in “Prepaid expenses and other current assets” |  | 3,286 |  |  | 5,106 |
Restricted cash included in “Other assets, net” |  | 1,283 |  |  | 384 |
Total cash, cash equivalents, and restricted cash reported in the statements of cash flows |  | $ | 83,256 |  |  | $ | 143,775 |
Additional supplemental cash flow information is as follows (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Cash (paid) received during the period for — |  |  |  |  |  |  |  |
Interest paid |  | $ | (16,312 | ) |  | $ | (9,279 | ) |  | $ | (45,469 | ) |  | $ | (24,011 | )
Income taxes paid |  | $ | (40,745 | ) |  | $ | (38,445 | ) |  | $ | (109,271 | ) |  | $ | (91,000 | )
Income tax refunds |  | $ | 4,730 |  |  | $ | 1,207 |  |  | $ | 6,058 |  |  | $ | 3,570 |
Supplemental Cash Flow Information Related to Leases | Supplemental cash flow information related to leases is as follows (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, 2019 |  | September 30, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |
Operating cash flows from operating leases |  | $ | (29,908 | ) |  | $ | (89,175 | )
Operating cash flows from finance leases |  | $ | (15 | ) |  | $ | (53 | )
Financing cash flows from finance leases |  | $ | (411 | ) |  | $ | (1,523 | )
Lease assets obtained in exchange for lease liabilities: |  |  |  |
Operating leases |  | $ | 32,701 |  |  | $ | 76,107 |
Finance leases |  | $ | 10 |  |  | $ | 631 |

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