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Guarantor Subsidiaries Financial Information - Condensed Cash Flow Statement (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used for) provided by operating activities | $ 38,038 | $ 26,511
Net cash used for investing activities | (104,160) | (905,872)
Net cash provided by (used for) financing activities | 1,995,310 | (70,049)
Effect of changes in currency exchange rates | (27,208) | 34,258
Increase (decrease) in cash | 1,901,980 | (915,152)
Cash, cash equivalents, and restricted cash, beginning of period | 233,401 | 1,143,232
Cash, cash equivalents, and restricted cash, end of period | 2,135,381 | 228,080
Elimination |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used for) provided by operating activities | (73,872) | (26,405)
Net cash used for investing activities | 0 | 0
Net cash provided by (used for) financing activities | 73,872 | 26,405
Effect of changes in currency exchange rates | 0 | 0
Increase (decrease) in cash | 0 | 0
Cash, cash equivalents, and restricted cash, beginning of period | 0 | 0
Cash, cash equivalents, and restricted cash, end of period | 0 | 0
Parent |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used for) provided by operating activities | (111,120) | (38,959)
Net cash used for investing activities | (12,498) | (12,591)
Net cash provided by (used for) financing activities | 1,883,490 | 52,077
Effect of changes in currency exchange rates | 0 | 0
Increase (decrease) in cash | 1,759,872 | 527
Cash, cash equivalents, and restricted cash, beginning of period | 933 | 2,522
Cash, cash equivalents, and restricted cash, end of period | 1,760,805 | 3,049
Guarantors |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used for) provided by operating activities | 95,503 | 101,597
Net cash used for investing activities | (1,303) | (2,358)
Net cash provided by (used for) financing activities | (94,752) | (99,615)
Effect of changes in currency exchange rates | 0 | 0
Increase (decrease) in cash | (552) | (376)
Cash, cash equivalents, and restricted cash, beginning of period | 625 | 1,226
Cash, cash equivalents, and restricted cash, end of period | 73 | 850
Non-Guarantors |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used for) provided by operating activities | 127,527 | (9,722)
Net cash used for investing activities | (90,359) | (890,923)
Net cash provided by (used for) financing activities | 132,700 | (48,916)
Effect of changes in currency exchange rates | (27,208) | 34,258
Increase (decrease) in cash | 142,660 | (915,303)
Cash, cash equivalents, and restricted cash, beginning of period | 231,843 | 1,139,484
Cash, cash equivalents, and restricted cash, end of period | $ 374,503 | $ 224,181

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 + Details
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- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 + Details
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- Definition Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906 + Details
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
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