Changes in Accumulate Other Comprehensive Loss by Component (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Oct. 31, 2014		Nov. 01, 2013		Oct. 31, 2014
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Unrealized Losses on Interest Rate Cash Flow Hedges, Beginning Balance, Pre-Tax Amount	$ 2	[1]	$ 0	[1]	$ 3	[1]
Unrealized Losses on Interest Rate Cash Flow Hedges, Other comprehensive loss before reclassifications, Pre-Tax Amount	3	[1]	4	[1]	5	[1]
Unrealized Losses on Interest Rate Cash Flow Hedges, Amounts reclassified from accumulated other comprehensive loss, Pre-Tax Amount	(2)	[1]	(1)	[1]	(5)	[1]
Unrealized Losses on Interest Rate Cash Flow Hedges, Net current-period other comprehensive loss, Pre-Tax Amount	1	[1]	3	[1]	0	[1]
Unrealized Losses on Interest Rate Cash Flow Hedges, Ending Balance, Pre-Tax Amount	3	[1]	3	[1]	3	[1]
Unrealized Losses on Fixed Interest Rate Swap Cash Flow Hedges, Beginning Balance, Income Tax	(1)	[2]	0	[2]	(1)	[2]
Unrealized Losses on Fixed Interest Rate Swap Cash Flow Hedges, Other comprehensive loss before reclassifications, Income Tax	(1)	[2]	(1)	[2]	(2)	[2]
Unrealized Losses on Fixed Interest Rate Swap Cash Flow Hedges, Amounts reclassified from accumulated other comprehensive loss, Income Tax	1	[2]	0	[2]	2	[2]
Unrealized Losses on Fixed Interest Rate Swap Cash Flow Hedges, Net current-period other comprehensive loss, Income Tax	0	[2]	(1)	[2]	0	[2]
Unrealized Losses on Fixed Interest Rate Swap Cash Flow Hedges, Ending Balance, Income Tax	(1)	[2]	(1)	[2]	(1)	[2]
Unrealized Losses on Interest Rate Cash Flow Hedges, Beginning Balance, Net Amount	1		0		2
Unrealized Losses on Interest Rate Cash Flow Hedges, Other comprehensive loss before reclassifications, Net Amount	2		3		3
Unrealized Losses on Interest Rate Cash Flow Hedges, Amounts reclassified from accumulated other comprehensive loss, Net Amount	(1)		(1)		(3)
Unrealized Losses on Interest Rate Cash Flow Hedges, Net current-period other comprehensive loss, Net Amount	1		2		0
Unrealized Losses on Interest Rate Cash Flow Hedges, Ending Balance, Net Amount	$ 2		$ 2		$ 2

[1] The amount reclassified from accumulated other comprehensive loss was included in interest expense

[2] The amount reclassified from accumulated other comprehensive loss was included in the provision for income taxes.