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Summary of Significant Accounting Policies - Additional Information (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended 13 Months Ended
Dec. 01, 2016
USD ($)
Dec. 31, 2019
USD ($)
shares
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
shares
Sep. 30, 2018
USD ($)
Sep. 30, 2018
SEK (kr)
Mar. 31, 2018
USD ($)
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
shares
Sep. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
USD ($)
Jun. 30, 2019
USD ($)
Dec. 31, 2019
SEK (kr)
shares
Oct. 25, 2019
USD ($)
Jan. 01, 2019
USD ($)
Summary of Significant Accounting Policies [Line Items]                                    
Operating Lease, Liability   $ 1,359,124                 $ 1,359,124              
Operating lease assets, net   1,308,511       $ 0         1,308,511   $ 0 $ 0        
Disposal Group, Continuing Operations, Revenue                       $ 55,000            
Number of Businesses Divested     2                              
Goodwill   4,406,535       4,381,458         4,406,535   4,381,458 3,536,511        
Other intangibles, net   850,338       928,752         850,338   928,752          
Restricted cash included in Other noncurrent assets   5,367       5,489         5,367   5,489 0        
Self Insurance Reserve   $ 109,000       105,000         $ 109,000   105,000          
Impairment of net assets held for sale and goodwill           33,000             (33,244)          
Amount that fair value exceeds carrying value   25.00%                 25.00%         25.00%    
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]                                    
Reserve for uncollectible accounts   $ 53,000       57,000         $ 53,000   57,000          
Inventory Disclosure [Abstract]                                    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory           394,259             394,259          
Property, Plant and Equipment [Abstract]                                    
Property, Plant and Equipment, Depreciation Methods                     straight-line method              
Depreciation                     $ 174,000   157,000 129,000        
Goodwill and Intangible Assets Disclosure [Abstract]                                    
Amortization expense                     140,000   137,000 102,000        
Estimated annual amortization expense in year one   120,000                 120,000              
Estimated annual amortization expense in year two   93,000                 93,000              
Estimated annual amortization expense in year three   80,000                 80,000              
Estimated annual amortization expense in year four   70,000                 70,000              
Estimated annual amortization expense in year five   64,000                 64,000              
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                                    
Equity method investments   139,243       179,169         139,243   179,169 208,404        
Fair Value Measured On Recurring Basis Gains Losses Included In Earnings                         5,000          
Investments in unconsolidated subsidiaries                     7,594   60,300 7,664        
Derivative Asset, Noncurrent   3,443       22,636         3,443   22,636          
Impairment of equity method investments                     41,057   70,895 0        
Equity in (losses) earnings of unconsolidated subsidiaries                     $ 32,277   $ 64,471 $ (5,907)        
Share Price of the Equity Method Investment | kr                               kr 93    
Effective Income Tax Rate Reconciliation, Amount [Abstract]                                    
U.S. federal statutory rate                     21.00%   21.00% 35.00%        
Adoption of ASU 2018-02 (see Note 4)                         $ 5,345          
Self Insurance Reserve, Current   54,000       52,000         $ 54,000   52,000          
Outstanding letters of credit   69,000       65,000         69,000   65,000          
Stock Repurchase Program, Authorized Amount   1,000,000       500,000         $ 1,000,000   $ 500,000       $ 500,000  
Stock Repurchased During Period, Shares | shares                     10,900,000   2,300,000          
Treasury Stock, Value   $ 351,813       $ 60,000         $ 351,813   $ 60,000          
Percentage Threshold For Uncertain Tax Positions                     50.00%              
Treasury Stock, Common, Shares | shares   13,195,915       2,271,707         13,195,915   2,271,707     13,195,915    
Payments for Repurchase of Common Stock                     $ 291,813   $ 60,000 $ 0        
Stock Repurchase Program Remaining Authorized Repurchases, Amount   $ 648,000                 648,000              
Goodwill, Impaired, Accumulated Impairment Loss   33,244                 33,244              
Impairment of Long-Lived Assets to be Disposed of   2,000 $ (4,000) $ 33,000 $ 15,000           47,000   $ 35,682          
Disposal Group, Continuing Operations, Assets   19,000                 19,000              
Disposal Group, Continuing Operations, Liabilities   $ 9,000                 $ 9,000              
Mekonomen [Member]                                    
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                                    
Equity Method Investment, Ownership Percentage           26.60%             26.60%          
Revolving Credit Facility [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Weighted average interest rates   1.60%       1.90%         1.60%   1.90%     1.60%    
Effective Income Tax Rate Reconciliation, Amount [Abstract]                                    
Line of Credit Facility, Remaining Borrowing Capacity   $ 1,800,000                 $ 1,800,000              
ManufacturedProducts [Member]                                    
Inventory Disclosure [Abstract]                                    
Inventory, Raw Materials and Supplies, Gross   17,000       $ 17,000         17,000   $ 17,000          
Inventory, Work in Process, Gross   3,000       2,000         3,000   2,000          
Inventory, Finished Goods, Gross   6,000       4,000         6,000   4,000          
Stahlgruber [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Goodwill           908,253             908,253          
Inventory Disclosure [Abstract]                                    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory           380,238             380,238          
Effective Income Tax Rate Reconciliation, Amount [Abstract]                                    
Goodwill, Purchase Accounting Adjustments                   $ 7,000     908,000   $ 915,000      
Warn Industries [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles                         5,000          
Mekonomen [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Equity Method Investments, Fair Value Disclosure   149,000                 149,000              
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                                    
Equity method investments   111,000                 111,000              
Equity Method Investment, Ownership Percentage 26.50%                                  
Investments in unconsolidated subsidiaries $ 181,000         48,000                        
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity   5,000                 5,000              
Impairment of equity method investments         $ 40,000 48,000 $ 23,000       40,000   71,000          
Proceeds from Equity Method Investment, Distribution             $ 8,000 kr 67,000,000                    
Noncontrolling Interest [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Dividends Payable   7,000                 7,000              
Accumulated Other Comprehensive Income (Loss)                                    
Effective Income Tax Rate Reconciliation, Amount [Abstract]                                    
Adoption of ASU 2018-02 (see Note 4)                 $ 5,000       5,345          
Accounting Standards Update 2016-02 [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Operating Lease, Liability                                   $ 1,300,000
Operating lease assets, net                                   $ 1,300,000
Right to acquire equity method investment [Domain] | Mekonomen [Member]                                    
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                                    
Fair Value Measured On Recurring Basis Gains Losses Included In Earnings                     0   (5,168) 0        
Amendment No. 3, Fourth Amended and Restate Credit Agreement [Member] | Revolving Credit Facility [Member]                                    
Effective Income Tax Rate Reconciliation, Amount [Abstract]                                    
Outstanding letters of credit   69,000                 69,000              
Europe [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Operating lease assets, net   457,035       0         457,035   0 0        
Goodwill   2,280,901       2,300,289         2,280,901   2,300,289 1,414,898        
Impairment of net assets held for sale and goodwill                         0          
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                                    
Equity method investments   121,619       162,765         121,619   162,765 208,068        
Equity in (losses) earnings of unconsolidated subsidiaries                     33,000   65,000 6,000        
Effective Income Tax Rate Reconciliation, Amount [Abstract]                                    
Goodwill, Impaired, Accumulated Impairment Loss   0                 0              
Disposal Group, Continuing Operations, Goodwill   (5,000)                 (5,000)              
North America [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Operating lease assets, net   768,164       0         768,164   0 0        
Goodwill   1,718,044       1,673,532         1,718,044   1,673,532 1,709,354        
Impairment of net assets held for sale and goodwill                         (33,244)          
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                                    
Equity method investments   17,624       $ 16,404         17,624   $ 16,404 $ 336        
Equity in (losses) earnings of unconsolidated subsidiaries                     1,000              
Effective Income Tax Rate Reconciliation, Amount [Abstract]                                    
Goodwill, Impaired, Accumulated Impairment Loss   $ 33,244                 33,244              
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]                                    
Summary of Significant Accounting Policies [Line Items]                                    
Disposal Group, Continuing Operations, Revenue                     $ 87,000