Goodwill and Intangible Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Dec. 31, 2011
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible amortization expense	$ 53,830
Estimated amortization expense, year ending June 30, 2012	98,601
Estimated amortization expense, year ending June 30, 2013	92,256
Estimated amortization expense, year ending June 30, 2014	88,671
Estimated amortization expense, year ending June 30, 2015	85,078
Estimated amortization expense, year ending June 30, 2016	$ 81,538