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Financial Statement Information (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Inventory [Line Items] |  |  |  |  |  |  |
Inventories |  | $ 2,288,293 |  |  | $ 2,288,293 |  | $ 2,772,777
Accounts Receivable, Allowance for Credit Loss, Current |  | 70,000 |  |  | 70,000 |  | 53,000
Accounts Receivable, Credit Loss Expense (Reversal) |  |  |  |  | 24,000 | $ 6,000 |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  |  |  |  | 24,000 | 6,000 |
Adoption of ASU 2016-13 (see Note 3) |  |  | $ (3,000) |  | (2,519) |  |
Accounts Receivable, Allowance for Credit Loss, Current |  | $ 70,000 |  |  | 70,000 |  | 53,000
Decrease in Market Capitalization | 40.00% |  |  |  |  |  |
Amount that fair value exceeds carrying value | 12.00% |  | 12.00% |  |  |  |
Increase in Market Capitalization |  | 28.00% |  |  |  |  |
Rent Reductions in Selling, General and Administrative Expenses |  | $ 2,000 |  |  |  |  |
Payments for Repurchase of Common Stock |  |  |  | $ 120,000 | 88,006 | $ 190,762 |
Lease Payment Deferrals Classified in Other Current Liabilities |  |  |  |  | 7,000 |  |
AftermarketAndRefurbishedProducts [Member] |  |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |  |
Inventories |  | 1,895,922 |  |  | 1,895,922 |  | 2,297,895
SalvageAndRemanufacturedProducts [Member] |  |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |  |
Inventories |  | 366,699 |  |  | 366,699 |  | 447,908
ManufacturedProducts [Member] |  |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |  |
Inventories |  | 25,672 |  |  | 25,672 |  | 26,974
Inventory, Raw Materials and Supplies, Gross |  | 18,000 |  |  | 18,000 |  | 17,000
Inventory, Work in Process, Gross |  | 3,000 |  |  | 3,000 |  | 3,000
Inventory, Finished Goods, Gross |  | $ 4,000 |  |  | $ 4,000 |  | $ 6,000
Minimum [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Lessee Lease Renewal Term |  |  |  |  | 1 year |  |
Lessee Lease Renewal Term |  |  |  |  | 1 year |  |
Maximum |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Lessee Lease Renewal Term |  |  |  |  | 40 years |  |
Lessee Lease Renewal Term |  |  |  |  | 40 years |  |
Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Adoption of ASU 2016-13 (see Note 3) |  |  | $ 3,000 |  |  |  |

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