This element represents the total net income attributable to the parent for the period and the effect of net changes during the period impacting the parent's ownership interest in a subsidiary as it relates to the total (consolidated) equity attributable to the parent. The changes to the parent's ownership interest in a subsidiary represented by this element did not result in a deconsolidation of the subsidiary from the consolidated financial statements.

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Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Stockholders Equity and Earnings Per Share - Additional Information (Detail) In Millions, unless otherwise specified	1 Months Ended							6 Months Ended
	Apr. 20, 2011 USD ($)	Apr. 20, 2011 CNY	Nov. 30, 2008	Apr. 20, 2011 Shanghai Comp Air Compressor Company Limited	Apr. 20, 2011 Shanghai Comp Air Dalong High Pressure Equipment Company Limited	Sep. 30, 2012 2012 Stock Repurchase Program	May 31, 2012 2012 Stock Repurchase Program	Jun. 30, 2012 2011 Stock Repurchase Program USD ($)	Nov. 30, 2011 2011 Stock Repurchase Program
Stockholders' Equity And Earnings Per Share [Line Items]
Share repurchase, authorized			3.0				1.6		1.3
Stock repurchased during period, shares								1.8
Stock repurchased during period, value								$ 114.0
Remaining shares available for purchase						1.6
Number of joint ventures in China	2	2
Acquisition of the equity interests in entities				49.00%	40.00%
Purchase price	18.8	122.0
Reduction in stockholders' equity attributable to Gardner Denver	$ 8.8