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Segment Reporting (Schedule of Operating Profit by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Segment Reporting Information |  |  |  |
Operating profit | $ 218,789 | $ 93,982 | $ 488,490 | $ 195,413
Operating Segments | OEM Segment |  |  |  |
Segment Reporting Information |  |  |  |
Operating profit | 190,577 | 63,334 | 435,951 | 142,621
Operating Segments | Aftermarket Segment |  |  |  |
Segment Reporting Information |  |  |  |
Operating profit | $ 28,212 | $ 30,648 | $ 52,539 | $ 52,792

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