Revenues and Long-Lived Assets by Geographical Area (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 07, 2012	Sep. 07, 2012	Sep. 30, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues	$ 1,223	$ 1,158	$ 3,415	$ 3,871
Property and equipment, net	11,110			11,110	11,588
Operating Segments | United States
Segment Reporting Information [Line Items]
Revenues	1,160	1,096	3,243	3,676
Property and equipment, net	10,634			10,634	11,095
Operating Segments | Australia
Segment Reporting Information [Line Items]
Revenues	10	10	27	30
Property and equipment, net	115			115	133
Operating Segments | Brazil
Segment Reporting Information [Line Items]
Revenues	7	8	22	22
Property and equipment, net	36			36	39
Operating Segments | Canada
Segment Reporting Information [Line Items]
Revenues	22	20	60	69
Property and equipment, net	93			93	97
Operating Segments | Chile
Segment Reporting Information [Line Items]
Revenues	7	10	24	24
Property and equipment, net	57			57	63
Operating Segments | Mexico
Segment Reporting Information [Line Items]
Revenues	6	6	16	17
Property and equipment, net	32			32	26
Operating Segments | New Zealand
Segment Reporting Information [Line Items]
Revenues	11	8	23	33
Property and equipment, net	$ 143			$ 143	$ 135