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Debt - Maturities (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Jan. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Long-term debt |  |  |
Other | $ 181 |  | $ 297
Long-term Debt | 4,055,944 |  | 3,604,681
Less: current portion | 181 |  | 297
Less: deferred financing costs | 27,997 |  | 26,049
Long-term Debt, Excluding Current Maturities, Total | 4,027,766 |  | 3,578,335
Maturity of primary debt |  |  |
2018 | 460,837 |  |
2019 | 303,489 |  |
2020 | 1,220,675 |  |
2021 | 696,000 |  |
Thereafter | 1,522,300 |  |
Total | $ 4,203,301 |  |
2.35% senior notes due September 2016 |  |  |
Long-term debt |  |  |
Interest rate on senior notes due (as a percent) | 2.35% |  |
6.15% senior notes due February 2018 |  |  |
Long-term debt |  |  |
Senior Notes | $ 460,762 |  | 827,539
Interest rate on senior notes due (as a percent) | 6.15% |  |
9.25% senior notes due January 2019 |  |  |
Long-term debt |  |  |
Senior Notes | $ 303,489 |  | 303,489
Interest rate on senior notes due (as a percent) | 9.25% |  |
5.00% senior notes due September 2020 |  |  |
Long-term debt |  |  |
Senior Notes | $ 669,846 |  | 669,540
Interest rate on senior notes due (as a percent) | 5.00% |  |
4.625% senior notes due September 2021 |  |  |
Long-term debt |  |  |
Senior Notes | $ 695,108 |  | 694,868
Interest rate on senior notes due (as a percent) | 4.625% |  |
5.10% senior notes due September 2023 |  |  |
Long-term debt |  |  |
Senior Notes | $ 346,576 |  | 346,448
Interest rate on senior notes due (as a percent) | 5.10% |  |
5.50% senior notes due January 2023 |  |  |
Long-term debt |  |  |
Senior Notes | $ 600,000 |  | 600,000
Interest rate on senior notes due (as a percent) | 5.50% |  |
0.75% senior exchangeable notes due January 2024 |  |  |
Long-term debt |  |  |
Senior Notes | $ 429,982 |  |
Less: deferred financing costs |  | $ 9,600 |
Interest rate on senior notes due (as a percent) | 0.75% | 0.75% |
Term Loan Facility |  |  |
Long-term debt |  |  |
Senior Notes |  |  | $ 162,500
Revolving Credit Facility |  |  |
Long-term debt |  |  |
Revolving credit facility | $ 510,000 |  |
Commercial paper |  |  |
Long-term debt |  |  |
Revolving credit facility | 40,000 |  |
Long-term Debt | $ 40,000 |  |

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- Definition Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -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=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -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=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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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