Business Combinations - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Summary of unaudited consolidated pro forma results of operations | ||||
| Revenues | $ 8,580.5 | $ 8,155.0 | $ 16,444.1 | $ 16,230.6 |
| Net income attributable to Penske Automotive Group common stockholders | $ 260.9 | $ 267.1 | $ 495.3 | $ 525.1 |
| Net income per diluted common share (in dollars per share) | $ 3.97 | $ 4.03 | $ 7.53 | $ 7.90 |
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- Definition Per diluted share amount, after tax, of pro forma income (loss) of combined entity as if acquisition date of business combination occurred as of beginning of period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Amount, after tax, of pro forma income (loss) of combined entity as if acquisition date of business combination occurred as of beginning of period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of pro forma revenue of combined entity as if acquisition date of business combination occurred as of beginning of period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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