Rent Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Leases [Abstract]
Minimum rentals on operating leases	$ 45	$ 46	$ 47
Additional rentals based on sales	38	33	32
Less: sublease rentals	(2)	(2)	(3)
Operating Leases, Rent Expense, Total	$ 81	$ 77	$ 76