Subsequent Events - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	6 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jan. 29, 2015	Jan. 22, 2015
Subsequent Event [Line Items]
Declared cash dividend, per share	$ 0.66	$ 0.60
Dividend payable, date to be paid	Feb. 24, 2015
Dividend payable, date of record	Feb. 09, 2015
Dividend payable, date declared	Jan. 29, 2015
Subsequent Event [Member]
Subsequent Event [Line Items]
Declared cash dividend, per share			$ 0.33
Subsequent Event [Member] | Red Bend Ltd. [Member]
Subsequent Event [Line Items]
Common stock shares consideration, amount				$ 99.0
Cash consideration paid				71.0
Acquisition earn-out contingent payable				30.0
Subsequent Event [Member] | Symphony Teleca Corporation [Member]
Subsequent Event [Line Items]
Common stock shares consideration, amount				166.0
Cash consideration paid				382.0
Base purchase price				780.0
Estimated purchase price to be paid at closing				$ 548.0