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Commitments and Contingencies (Details) $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
May. 13, 2015 USD ($) | Feb. 27, 2016 USD ($) | Jan. 30, 2016 item | Jun. 30, 2012 USD ($) item | Dec. 31, 2015 USD ($) item | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | $ 856 |  |
2017 |  |  |  |  | 215 |  |
2018 |  |  |  |  | 118 |  |
2019 |  |  |  |  | 86 |  |
2020 |  |  |  |  | 59 |  |
Thereafter |  |  |  |  | 236 |  |
Operating Leases |  |  |  |  |  |  |
2016 |  |  |  |  | 28 |  |
2017 |  |  |  |  | 28 |  |
2018 |  |  |  |  | 26 |  |
2019 |  |  |  |  | 25 |  |
2020 |  |  |  |  | 24 |  |
Thereafter |  |  |  |  | 190 |  |
Rental expense for operating leases |  |  |  |  | 42 | $ 35 | $ 34
Pork |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Payments to acquire inventory and related assets |  | $ 148 |  |  |  |  |
Pork | Seaboard Triumph Foods |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Amount invested under equity method |  |  |  |  | $ 26 |  |
Pork | Seaboard Triumph Foods | Maximum |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Commitment to contribute to joint venture | $ 207 |  |  |  |  |  |
Pork | Pork processing facility |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Amount invested under equity method | 26 |  |  |  |  |  |
Pork | Pork processing facility | Maximum |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Commitment to contribute to joint venture | $ 207 |  |  |  |  |  |
Commodity Trading and Milling |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Number of dry bulk vessels to be built | item |  |  |  | 4 |  |  |
Cost of dry bulk vessels to be built |  |  |  | $ 90 |  |  |
Number of bulk vessels delivered | item |  |  | 1 |  | 2 |  |
Number of bulk vessels not delivered | item |  |  |  |  | 2 |  |
Hog procurement contracts |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | $ 139 |  |
2017 |  |  |  |  | 101 |  |
2018 |  |  |  |  | 33 |  |
2019 |  |  |  |  | 12 |  |
Hog procurement contracts | Pork |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Amount paid under the contract |  |  |  |  | 171 | 227 | 191
Grain and feed ingredients |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 78 |  |
Grain purchase contracts for resale |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 358 |  |
Fuel supply contract |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 5 |  |
Equipment purchases and facility improvements |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 25 |  |
Construction of new dry bulk vessels |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 29 |  |
Other purchase commitments |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 35 |  |
2017 |  |  |  |  | 8 |  |
2018 |  |  |  |  | 8 |  |
2019 |  |  |  |  | 9 |  |
2020 |  |  |  |  | 13 |  |
Total firm purchase commitments |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 669 |  |
2017 |  |  |  |  | 109 |  |
2018 |  |  |  |  | 41 |  |
2019 |  |  |  |  | 21 |  |
2020 |  |  |  |  | 13 |  |
Vessel, time and voyage-charters |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 51 |  |
2017 |  |  |  |  | 23 |  |
2018 |  |  |  |  | 22 |  |
2019 |  |  |  |  | 22 |  |
2020 |  |  |  |  | 22 |  |
Thereafter |  |  |  |  | 46 |  |
Vessel, time and voyage-charters | Marine |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Amount paid under the contract |  |  |  |  | $ 99 | 87 | 91
Vessel, time and voyage-charters | Marine | Minimum |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Contract period |  |  |  |  | 1 year |  |
Vessel, time and voyage-charters | Marine | Maximum |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Contract period |  |  |  |  | 11 years |  |
Contract grower finishing agreements |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | $ 11 |  |
2017 |  |  |  |  | 9 |  |
2018 |  |  |  |  | 7 |  |
2019 |  |  |  |  | 2 |  |
Contract grower finishing agreements | Pork |  |  |  |  |  |  |
Conditional and Unconditional Commitments |  |  |  |  |  |  |
Amount paid under the agreement |  |  |  |  | 12 | $ 13 | $ 13
Incentive payments for achieving certain performance standards |  |  |  |  | 1 |  |
Investment in pork processing facility joint venture |  |  |  |  |  |  |
Commitments |  |  |  |  |  |  |
2016 |  |  |  |  | 97 |  |
2017 |  |  |  |  | 46 |  |
2018 |  |  |  |  | 22 |  |
2019 |  |  |  |  | $ 16 |  |

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Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis=seb_InvestmentInPorkProcessingFacilityJointVentureMember
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Data Type: | na
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