Pro forma information presents the results of operations of Dana (Detail) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net income (loss)
As reported	$ 70	$ 10	$ 45	$ (20)
Net income (loss) attributable to the parent company
As reported	68	9	38	(22)
Net income (loss) available to common stockholders
As reported	61	1	23	(38)
Net income (loss) per share - Basic
As reported	$ 0.41		$ 0.16	$ (0.28)
Net income (loss) per share - Diluted
As reported	$ 0.32		$ 0.15	$ (0.28)
Dongfeng Dana Axle Co., Ltd.
Net income (loss)
As reported			45	(20)
Pro forma			50	(15)
Net income (loss) attributable to the parent company
As reported			38	(22)
Pro forma			43	(17)
Net income (loss) available to common stockholders
As reported			23	(38)
Pro forma			$ 28	$ (33)
Net income (loss) per share - Basic
As reported			$ 0.16	$ (0.28)
Pro forma			$ 0.19	$ (0.24)
Net income (loss) per share - Diluted
As reported			$ 0.15	$ (0.28)
Pro forma			$ 0.19	$ (0.24)