Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended
	Sep. 27, 2012	Dec. 29, 2011	Sep. 27, 2012 RCI	Sep. 29, 2011 RCI	Sep. 27, 2012 RCI	Sep. 29, 2011 RCI	Sep. 27, 2012 Prop I	Dec. 29, 2011 Prop I	Sep. 27, 2012 NCM Inc. RCI	Sep. 29, 2011 NCM Inc. RCI	Sep. 27, 2012 NCM Inc. RCI	Sep. 29, 2011 NCM Inc. RCI	Sep. 27, 2012 DCIP RCI renewal_option screen digital_projection_system	Sep. 29, 2011 DCIP RCI
Related Party Transactions
Management fee expenses			$ 1.5	$ 1.8	$ 4.6	$ 4.7
Related party receivables	93.4	87.1					9.8	9.8
Receivables related to intercompany transactions and cash management	83.6	77.3
Number of theatres subject to lease	3						3
Original base term of lease							15 years
Renewal extension period of the lease							10 years
Increase in related party receivables due to the timing of intercompany cash collections and disbursements							6.3
Maximum term of lease, excluding renewal options													12 years
Number of one-year fair value renewal options													10
Fair value renewal options term													1 year
Annual minimum rent per digital projection system, from effective date of agreement through the end of the lease term													1,000
Incremental annual minimum rent per digital projection system beginning six and half years from agreement effective date, upon certain conditions													2,000
Annual minimum rent, initial period													6 years 6 months
Leased digital projection systems, total rent													0.7	0.4
Number of digital project systems installed during the period													36
Number of screens operated, outfitted with digital projection systems													483
Extended term of exhibitor services agreement											30 years
Right of first refusal period											5 years
Period prior to end of agreement term for commencement of right of first refusal											1 year
Other operating revenues, other revenue from National CineMedia
Theatre access fees per patron									0.3	0.3	0.9	0.9
Theatre access fees per digital screen									0.1	0.1	0.3	0.3
Other NCM revenue									0	0.1	0.2	0.1
Amortization of ESA modification fees									0.1	0.1	0.3	0.3
Payments for beverage concessionaire advertising									(0.3)	(0.3)	(0.8)	(0.8)
Total									$ 0.2	$ 0.3	$ 0.9	$ 0.8