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Seasonal Financing and Debt - Narrative (Detail) - USD ($) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 20, 2017 | Nov. 01, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Aug. 31, 2016
Debt Instrument [Line Items] |  |  |  |  |
Carrying Value of Assets Pledged As Collateral |  |  | $ 900,000,000 |  |
Foreign credit lines available |  |  | 110,000,000 |  |
Outstanding amounts of accounts receivable sold under international factoring arrangements |  |  | 19,000,000 | $ 18,000,000 |
Short term bank loans outstanding |  |  | $ 0 | $ 192,168,000 |
2010 Senior Notes due October 2020 and October 2040 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate |  |  | 5.28% | 5.28% |
2011 Senior Notes due November 2041 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate range |  |  | 2.50% |  |
Interest rate |  |  |  | 5.45% |
Repayments of debt |  | $ 300,000,000 |  |  |
2013 Senior Notes due March 2018 and March 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate |  |  | 2.43% | 2.43% |
2014 Senior Notes due May 2019 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate range |  |  | 2.35% | 2.35% |
2016 Senior Notes due August 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate range |  |  | 2.35% |  |
Minimum | 2010 Senior Notes due October 2020 and October 2040 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate range |  |  | 4.35% |  |
Minimum | 2013 Senior Notes due March 2018 and March 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate range |  |  | 1.70% |  |
Maximum | 2010 Senior Notes due October 2020 and October 2040 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate range |  |  | 6.20% |  |
Maximum | 2011 Senior Notes due November 2041 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate range |  |  | 5.45% |  |
Maximum | 2013 Senior Notes due March 2018 and March 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate range |  |  | 3.15% |  |
Revolving Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate commitment under the credit facility |  |  |  | $ 1,600,000,000.00 |
Borrowings on credit facility |  |  |  | $ 0 |
Revolving Credit Facility | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Commitment fee rate for unused commitments |  |  |  | 0.08% |
Revolving Credit Facility | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Commitment fee rate for unused commitments |  |  |  | 0.25% |
Revolving Credit Facility | Base Rate | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) |  |  |  | 0.00% |
Revolving Credit Facility | Base Rate | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) |  |  |  | 0.75% |
Revolving Credit Facility | LIBOR | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) |  |  |  | 0.88% |
Revolving Credit Facility | LIBOR | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) |  |  |  | 1.75% |
Foreign Short Term Bank Loans |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Short term bank loans outstanding |  |  |  | $ 47,200,000 |
Average borrowings |  |  | $ 0 | $ 2,000,000 |
Weighted average interest rate as of the balance sheet date |  |  |  | 12.50% |
Domestic Unsecured Committed Revolving Credit Facility And Other Short Term Borrowings |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Average borrowings |  |  | $ 811,500,000 | $ 728,400,000 |
Weighted average interest rate as of the balance sheet date |  |  | 1.60% | 0.60% |
2016 Senior Notes due August 2021 | Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal of debt instrument |  |  |  |  | $ 350,000,000.0
Interest rate range |  |  |  | 2.35% | 2.35%
2017 Senior Notes due December 2025 | Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal of debt instrument |  |  | $ 1,000,000,000.0 |  |
Interest rate range |  |  | 6.75% |  |
Debt Instrument, Redemption, Period One | 2016 Senior Notes due August 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) |  |  | 0.20% |  |
Redemption price option one |  |  | 100.00% |  |
Debt Instrument, Redemption, Period One | 2017 Senior Notes due December 2025 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Percentage of principal amount of debt redeemed |  |  | 40.00% |  |
Redemption price option one |  |  | 106.75% |  |
Debt Instrument, Redemption, Period One | 2017 Senior Notes due December 2025 | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price call premium |  |  | 0.00% |  |
Debt Instrument, Redemption, Period One | 2017 Senior Notes due December 2025 | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price call premium |  |  | 5.063% |  |
Debt Instrument, Redemption, Period Two | 2016 Senior Notes due August 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price option one |  |  | 100.00% |  |
Commercial Paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Short term bank loans outstanding |  |  |  | $ 145,000,000 |
Revolving Credit Facility | Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate commitment under the credit facility | $ 1,600,000,000 |  |  |  |
Equity interest subject to a lien (as a percent) | 100.00% |  |  |  |
Voting stock subject to a lien (as a percent) | 65.00% |  |  |  |
Interest coverage ratio minimum for covenant compliance | 1.00 |  |  |  |
Excess availability under credit facility contingency (less than) | $ 100,000,000 |  |  |  |
Availability threshold contingency (as a percent) | 10.00% |  |  |  |
Revolving Credit Facility | Credit Agreement | Base Rate | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) | 0.25% |  |  |  |
Revolving Credit Facility | Credit Agreement | Base Rate | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) | 2.00% |  |  |  |
Revolving Credit Facility | Credit Agreement | LIBOR | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) | 1.25% |  |  |  |
Revolving Credit Facility | Credit Agreement | LIBOR | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate margin for loans (as a percent) | 3.00% |  |  |  |
Revolving Credit Facility, Asset Based | Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate commitment under the credit facility | $ 1,310,000,000 |  |  |  |
Revolving Credit Facility, Secured | Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate commitment under the credit facility | $ 294,000,000 |  |  |  |

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