Revenues and Long-Lived Assets by Geographical Area (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 15, 2012	Jun. 30, 2013	Jun. 15, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues	$ 1,420	$ 1,326	$ 2,663	$ 2,270
Property and equipment, net	11,201		11,201		11,588
United States
Segment Reporting Information [Line Items]
Revenues	1,353	1,259	2,531	2,161
Property and equipment, net	10,741		10,741		11,095
AUSTRALIA
Segment Reporting Information [Line Items]
Revenues	10	10	20	16
Property and equipment, net	114		114		133
Brazil
Segment Reporting Information [Line Items]
Revenues	8	8	15	14
Property and equipment, net	36		36		39
Canada
Segment Reporting Information [Line Items]
Revenues	26	23	47	40
Property and equipment, net	89		89		97
Chile
Segment Reporting Information [Line Items]
Revenues	8	11	17	15
Property and equipment, net	57		57		63
Mexico
Segment Reporting Information [Line Items]
Revenues	5	6	11	10
Property and equipment, net	32		32		26
New Zealand
Segment Reporting Information [Line Items]
Revenues	10	9	22	14
Property and equipment, net	$ 132		$ 132		$ 135