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Financial Statement Information - Additional Information (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 01, 2016
USD ($)
Mar. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
Jun. 30, 2018
SEK (kr)
Jun. 30, 2018
USD ($)
Mar. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
Mar. 31, 2019
SEK (kr)
shares
Mar. 31, 2019
USD ($)
shares
Jan. 01, 2019
USD ($)
Summary of Significant Accounting Policies [Line Items]                        
Contract with Customer, Refund Liability     $ 105,000         $ 105,000     $ 105,000  
Net Inventory Held-for-Sale                     62,000  
Goodwill     4,381,458         4,381,458     4,354,306  
Other intangibles, net     928,752         928,752     889,609  
Restricted cash included in Other assets           $ 0         5,381  
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]                        
Reserve for uncollectible accounts     57,000         57,000     55,000  
Inventory Disclosure [Abstract]                        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory     394,259         394,259        
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                        
Equity method investments     179,169         179,169     134,234  
Derivative Asset, Noncurrent     22,636         $ 22,636     $ 19,019  
Equity in (losses) earnings of unconsolidated subsidiaries   $ 39,549       (1,412)            
Share Price of the Equity Method Investment | kr                   kr 65    
Effective Income Tax Rate Reconciliation, Amount [Abstract]                        
U.S. federal statutory rate               21.00% 35.00%      
Adoption of ASU 2018-02 (see Note 8)           5,345            
Stock Repurchase Program, Authorized Amount     $ 500,000         $ 500,000        
Stock Repurchased During Period, Shares | shares   2,600,000           2,300,000        
Treasury Stock, Common, Shares | shares     2,271,707         2,271,707   4,915,031 4,915,031  
Payments for Repurchase of Common Stock   $ (70,462)       0   $ (60,000)        
Stock Repurchase Program Remaining Authorized Repurchases, Amount                     $ 370,000  
Impairment of net assets held for sale   15,023       0            
Disposal Group, Including Discontinued Operation, Assets                     88,000  
Net Liabilities Held-for-Sale                     8,000  
Contract with Customer, Right to Recover Product     $ 56,000         $ 56,000     $ 56,000  
Disposal Group, Including Discontinued Operation, Revenue             $ 170,000          
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     1.90%         1.90%   1.80% 1.80%  
Effective Income Tax Rate Reconciliation, Amount [Abstract]                        
Outstanding letters of credit                     $ 65,000  
Line of Credit Facility, Remaining Borrowing Capacity                     1,700,000  
ManufacturedProducts [Member]                        
Inventory Disclosure [Abstract]                        
Inventory, Raw Materials and Supplies, Gross     $ 17,000         $ 17,000     17,000  
Inventory, Work in Process, Gross     2,000         2,000     2,000  
Inventory, Finished Goods, Gross     4,000         4,000     6,000  
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        
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                     110,000  
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                        
Equity Method Investment, Additional Information December 1, 2016                      
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  
Equity in (losses) earnings of unconsolidated subsidiaries   $ 40,000       (2,000)            
Proceeds from Equity Method Investment, Distribution       kr 67,000,000 $ 8,000              
Accumulated Other Comprehensive Income (Loss)                        
Effective Income Tax Rate Reconciliation, Amount [Abstract]                        
Adoption of ASU 2018-02 (see Note 8)           $ 5,345            
Increase to total leased assets [Member]                        
Effective Income Tax Rate Reconciliation, Amount [Abstract]                        
Adoption of ASU 2016-02                       $ 1,300,000
Increase to total liabilities [Member]                        
Effective Income Tax Rate Reconciliation, Amount [Abstract]                        
Adoption of ASU 2016-02                       $ 1,300,000
Europe                        
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                        
Equity method investments     $ 162,765         $ 162,765     116,683  
Effective Income Tax Rate Reconciliation, Amount [Abstract]                        
Disposal Group, Including Discontinued Operation, Goodwill                     $ (5,000)