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Acquisitions and Dispositions (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Allocation of purchase price [Line Items] |  |
Inventory, Net | $ 1,657,105 | $ 1,556,705
Assets, Current | 2,099,365 | 2,035,219
Property, Plant and Equipment, Net | 965,363 | 950,388
Total assets | 4,302,974 | 4,141,492
Liabilities, Current | $ 2,010,599 | 1,922,199
Businesses acquired [Member] |  |
Allocation of purchase price [Line Items] |  |
Inventory, Net |  | 132,180
Assets, Current |  | 6,601
Property, Plant and Equipment, Net |  | 78,771
Intangible Assets, Net (Including Goodwill) |  | 184,896
Deferred Tax Assets, Gross |  | 7,265
Total assets |  | 409,713
Liabilities, Current |  | 59,912
Long-term Debt |  | 13,250
Total liabilities |  | $ 73,162

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