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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Commitments and Obligations | The following table presents these commitments and obligations as of December 31, 2017:
|  |  | By Period
| Total |  | Less than 1 year |  | 1 to 3 years |  | 3 to 5 years |  | More than 5 years
| (In thousands)
Purchase obligations | $ | 409,802 |  |  | $ | 256,834 |  |  | $ | 152,968 |  |  | $ | — |  |  | $ | — |
Guarantees | 135,053 |  |  | 120,278 |  |  | 14,775 |  |  | — |  |  | — |
Letters of credit | 42,419 |  |  | 25,653 |  |  | 11,103 |  |  | 169 |  |  | 5,494 |
| $ | 587,274 |  |  | $ | 402,765 |  |  | $ | 178,846 |  |  | $ | 169 |  |  | $ | 5,494 |
Estimated Future Minimum Rental Payments Under Operating Leases | The following table presents our estimated future minimum rental payments under operating leases with noncancelable lease terms that expire after December 31, 2017, in thousands:
Year ending December 31, |
2018 | $ | 138,785 |
2019 | 121,017 |
2020 | 103,695 |
2021 | 79,192 |
2022 | 72,901 |
2023 and thereafter | 333,792 |
| $ | 849,382 |

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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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