Summary Financial Information for NCM (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 27, 2013 NCM	Jun. 27, 2013 NCM
Schedule of Equity Method Investments [Line Items]
Gross revenues					$ 122,810	$ 205,029
Operating income	135,192	94,153	334,838	297,550	57,928	79,563
Net earnings	$ 80,745	$ 47,967	$ 134,644	$ 142,982	$ 41,153	$ 46,778