Equity (Details) (USD $) In Thousands, except Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Attributable to Penske Automotive Group:
Net income	$ 39,560	$ 29,441	$ 73,487	$ 49,795
Other comprehensive income (loss):
Foreign currency translation	2,883	(15,123)	19,734	(42,831)
Other	(4,359)	4,029	(4,689)	7,215
Total attributable to Penske Automotive Group	38,084	18,347	88,532	14,179
Attributable to the non-controlling interest:
Income (loss)	499	243	569	221
Total comprehensive income (loss)	38,583	18,590	89,101	14,400
Equity (Textuals)
Repurchased shares			618
Repurchased shares, average price			$ 20.08
Repurchased shares, total price			$ 12,413

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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