Changes in Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Goodwill
Balance as of December 31, 2011	$ 858,444
Acquisitions	6,760
Adjustments	(534)	[1]
Balance as of June 30, 2012	864,670
Licenses
Goodwill
Balance as of December 31, 2011	542,243
Adjustments	(221)
Balance as of June 30, 2012	542,022
Maintenance Services
Goodwill
Balance as of December 31, 2011	307,881
Acquisitions	6,760
Adjustments	(280)
Balance as of June 30, 2012	314,361
Professional Services
Goodwill
Balance as of December 31, 2011	8,320
Adjustments	(33)
Balance as of June 30, 2012	$ 8,287

[1] Goodwill adjustments primarily relate to the finalization of the tax effects of our acquisitions.