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Segment Reporting (Schedule of Operating Profit by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Segment Reporting Information |  |
Operating profit | $ 269,701 | $ 101,431
Operating Segments | OEM Segment |  |
Segment Reporting Information |  |
Operating profit | 245,374 | 79,287
Operating Segments | Aftermarket Segment |  |
Segment Reporting Information |  |
Operating profit | $ 24,327 | $ 22,144

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