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Debt - Australian Dollar Term Loan (Details) $ in Thousands, $ in Thousands |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 29, 2018 USD ($) | Mar. 29, 2018 AUD ($) | Mar. 27, 2018 AUD ($) | Sep. 28, 2016 AUD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2019 AUD ($) | Dec. 31, 2018 AUD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt (inclusive of discount) |  |  |  |  | $ 8,751,544 | $ 8,229,430 |  |  |
Net proceeds from sales of senior notes |  |  |  |  | 987,500 | 0 | $ 2,656,948 |  |
Australian Dollar Term Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt (inclusive of discount) |  |  | $ 350,000 | $ 250,000 | 226,924 | 233,955 |  |  |
Amount of quarterly installments based on the original principal |  |  | $ 8,750 | $ 6,250 |  |  |  |  |
Par | 99.00% | 99.00% |  |  |  |  |  |  |
Net proceeds from sales of senior notes | $ 75,600 | $ 99,000 |  |  |  |  |  |  |
Fair Value |  |  |  |  | $ 228,156 | $ 235,645 |  | $ 325,313 | $ 334,063
Effective interest rate (as a percent) |  |  |  |  | 4.80% | 6.00% |  | 4.80% | 6.00%
Australian Dollar Term Loan | BBSY |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 3.875% | 4.30% |  |  |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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