Segment Reporting (Schedule of Operating Profit by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information
Operating profit	$ 55,174	$ 218,789	$ 75,217	$ 488,490
Operating Segments \| OEM Segment
Segment Reporting Information
Operating profit	18,642	190,577	17,921	435,951
Operating Segments \| Aftermarket Segment
Segment Reporting Information
Operating profit	$ 36,532	$ 28,212	$ 57,296	$ 52,539

The net result for the period of deducting operating expenses from operating revenues.

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