Summary Financial Information for National Cinemedia (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 26, 2014 NCM	Jun. 27, 2013 NCM	Jun. 26, 2014 NCM	Jun. 27, 2013 NCM
Schedule of Equity Method Investments [Line Items]
Gross revenues					$ 99,958	$ 122,810	$ 170,173	$ 205,029
Operating income	116,866	134,017	184,721	199,646	42,131	57,928	54,898	79,563
Net earnings	$ 72,134	$ 20,837	$ 107,830	$ 53,899	$ 26,467	$ 41,153	$ 23,703	$ 46,778