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Comprehensive Income (Loss) and Equity - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended 129 Months Ended
Sep. 06, 2021
Mar. 31, 2020
Oct. 02, 2021
Jul. 03, 2021
Apr. 03, 2021
Dec. 31, 2020
Oct. 03, 2020
Oct. 02, 2021
Oct. 03, 2020
Oct. 02, 2021
Apr. 02, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]                      
Foreign currency translation adjustments related to intercompany transactions gains (losses)     $ 200,000       $ 500,000 $ (400,000) $ (500,000)    
Aggregate purchases authorized under common stock share repurchase program                     $ 6,100,000,000
Aggregate repurchases     $ 69,100,000         $ 100,300,000 $ 70,000,000.0 $ 4,800,000,000  
Average price (in dollars per share)     $ 164.56         $ 170.03 $ 109.22 $ 90.97  
Cash dividends declared per share (in dollars per share)   $ 0.77 $ 0.50 $ 0.25 $ 0.25 $ 0.25 $ 0 $ 1.00 $ 0.77    
Shenyang Lear Automotive Seating and Interior Systems Co., Ltd                      
Accumulated Other Comprehensive Income (Loss) [Line Items]                      
Sale of stock percentage of ownership 49.00%                    
Proceeds from sale of equity method investments $ 36,200,000                    
Equity method investment $ 7,600,000