Derivative Instruments and Hedging Activities - Foreign Currency Swaps and Forwards (Details) - Intercompany Loans Entered into in December 2011 - CAD [Member] - Foreign Exchange Contract [Member] CAD in Millions, $ in Millions	1 Months Ended		12 Months Ended
	Oct. 31, 2013 USD ($)	Dec. 31, 2011 CAD	Feb. 01, 2014 USD ($)	Feb. 01, 2014 CAD	Feb. 02, 2013 USD ($)	Feb. 02, 2013 CAD	Oct. 31, 2013 CAD
Derivative [Line Items]
Intercompany Loans | CAD		CAD 750
Cash received on hedge | $	$ 720
Derivative, notional amount | CAD							CAD 750
Notional amount settled | CAD				CAD 250		CAD 500
Loss recognized in income | $			$ 4		$ 24
Unrealized gains (losses) recognized | $			$ 6