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Seasonal Financing and Debt - Long-Term Debt (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-term debt | $ 2,134,271 | $ 2,084,721
Debt issuance costs | (15,729) | (15,279)
Less: current portion | 0 | (300,000)
Long-term debt | 2,134,271 | 1,784,721
2010 Senior Notes due October 2020 and October 2040 |  |
Debt Instrument [Line Items] |  |
Long-term debt | 500,000 | 500,000
2011 Senior Notes due November 2016 and November 2041 |  |
Debt Instrument [Line Items] |  |
Long-term debt | 300,000 | 600,000
2013 Senior Notes due March 2018 and March 2023 |  |
Debt Instrument [Line Items] |  |
Long-term debt | 500,000 | 500,000
2014 Senior Notes due May 2019 |  |
Debt Instrument [Line Items] |  |
Long-term debt | 500,000 | 500,000
2016 Senior Notes due August 2021 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 350,000 | $ 0

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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 Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: 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(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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 Reference 3: 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 + Details
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