Stockholders' (Deficit) Equity (Detail)	12 Months Ended
	Dec. 31, 2015 USD ($) vote $ / shares	Dec. 31, 2014 USD ($) $ / shares	Dec. 31, 2013 USD ($)	May. 05, 2015 USD ($)
Equity [Abstract]
Common stock par value (in Dollars per share) | $ / shares	$ 0.0005	$ 0.0005
Common stock, number of votes per share | vote	1
Payments for purchases of treasury stock	$ 509,049,000	$ 432,006,000	$ 181,736,000
Stock repurchase program, authorized amount				$ 1,200,000,000
Stock repurchase program, remaining authorized amount	$ 1,100,000,000