Summary of Goodwill (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Goodwill [Line Items]
Beginning Balance	$ 1,247,548	[1]
Acquisition of U.S. theatres	7,607
Foreign currency translation adjustments	7,290
Ending Balance	1,262,445	[1]
U.S. Operating Segment
Goodwill [Line Items]
Beginning Balance	1,156,556	[1]
Acquisition of U.S. theatres	7,607
Ending Balance	1,164,163	[1]
International Operating Segment
Goodwill [Line Items]
Beginning Balance	90,992	[1]
Foreign currency translation adjustments	7,290
Ending Balance	$ 98,282	[1]

[1] Balances are presented net of accumulated impairment losses of $214,031 for the U.S. operating segment and $27,622 for the international operating segment.