Notes Receivable Principal Payments (Net of Reserves and Unamortized Discounts) and Interest Rates (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 28, 2012
Receivables [Abstract]
2013	$ 44
2014	52
2015	66
2016	1
2017	0
Thereafter	60
Senior, mezzanine, and other loans	$ 223	$ 242
Weighted average interest rate at March 31, 2013	5.00%
Range of stated interest rates at March 31, 2013, minimum	0.00%
Range of stated interest rates at March 31, 2013, maximum	12.70%