Minimum exercise price on put/call option agreement for the remaining ownership interest in Copal Partners Ltd.

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Amount of potential cash payments that could result from the contingent consideration arrangement.

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Fair Value of the liabilities incurred by the acquirer to former owners of the acquiree, including the fair value of any contingent consideration. If liabilities transferred as consideration remain within the combined entity after the business combination (for example, because the assets or liabilities were transferred to the acquiree rather than to its former owners), and the acquirer therefore retains control of them; in that situation, the acquirer measures those liabilities at their carrying amounts immediately before the acquisition date.

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Percentage of voting equity interests acquired in the business combination.

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The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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The fair value of notes issued in noncash investing and financing activities.

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Acquisitions - Additional Information (Detail) In Millions, unless otherwise specified	1 Months Ended		1 Months Ended		1 Months Ended				1 Months Ended
	Dec. 16, 2011 Barrie & Hibbert Limited USD ($)	Dec. 31, 2011 Barrie & Hibbert Limited USD ($)	Nov. 04, 2011 Copal Partners USD ($)	Dec. 31, 2011 Copal Partners USD ($)	Nov. 04, 2011 Copal USD ($)	Nov. 04, 2011 Copal Maximum USD ($)	Nov. 04, 2011 Copal Group of Companies	May 06, 2011 KIS Pricing, Inc.	Nov. 18, 2010 CSI Global Education, Inc. USD ($)	Nov. 18, 2010 CSI Global Education, Inc. CAD
Business Acquisition [Line Items]
Purchase price	$ 79.5								$ 151.4
Acquired cash	10.0		7.0						2.8
Amount related to transaction cost		1		7
Acquired interest			67.00%		100.00%		75.00%
Remaining ownership interest			33.00%
Option minimum exercise price			46
Non-interest bearing note issued					14.2
Contingent consideration liability assumed			6.8
Contingent cash payment						$ 2.5				2.5
Additional direct equity investment in KIS pricing								16.00%