v3.26.1
Net Income Per Share Attributable to Lear (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jul. 04, 2026
Jun. 28, 2025
Jul. 04, 2026
Jun. 28, 2025
Earnings Per Share [Abstract]        
Net income attributable to Lear $ 192.8 $ 165.2 $ 365.1 $ 245.9
Average common shares outstanding (in shares) 50,302,285 53,764,586 50,678,872 53,839,060
Dilutive effect of common stock equivalents (in shares) 519,728 291,521 511,789 301,255
Average diluted shares outstanding (in shares) 50,822,013 54,056,107 51,190,661 54,140,315
Basic net income per share attributable to Lear (in dollars per share) $ 3.83 $ 3.07 $ 7.20 $ 4.57
Diluted net income per share attributable to Lear (in dollars per share) $ 3.79 $ 3.06 $ 7.13 $ 4.54