Proposed Acquisition of Office Depot (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended		12 Months Ended
	May 19, 2016	Jul. 30, 2016	Apr. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015	Jan. 30, 2016	May 16, 2016	Feb. 02, 2016	Feb. 04, 2015
Business Acquisition [Line Items]
Merger-related costs		$ 0		$ 10	$ 24	$ 20
Proceeds from Issuance of Long-term Debt and Capital Securities, Net			$ 2,475
interest and fees paid related to transaction financing arrangements					156
Loss on early extinguishment of debt		(26)		0	(26)	0
cash payment into escrow account			$ 66
Interest Paid					68
Office Depot [Member]
Business Acquisition [Line Items]
Merger termination fee	$ 250
February 2015 Term Loan [Member] | Term Loan [Member]
Business Acquisition [Line Items]
Debt Instrument, Term							6 years
Debt Instrument, Face Amount										$ 2,750
February 2016 Term Loan [Member] | Term Loan [Member]
Business Acquisition [Line Items]
Debt Instrument, Face Amount									$ 2,500
Deposit Liabilities, Accrued Interest				$ 91		$ 91
Interest Expense, Debt		7			39
Deferred Finance Costs, Current, Net		2			2
Interest Income, Other					2
Debt Instrument, Discount, Percent of Par Value									1.00%
Debt Related Commitment Fees and Debt Issuance Costs					88
February 2016 Term Loan [Member] | Term Loan [Member] | restricted cash location [Domain]
Business Acquisition [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums		$ 25			$ 25
Revolving Credit Facility [Member] | Asset-Based Revolving Credit Facility [Member]
Business Acquisition [Line Items]
Line of Credit Facility, Expiration Period							5 years
Line of Credit Facility, Maximum Borrowing Capacity										$ 3,000
Customer Contracts [Member] | Office Depot [Member]
Business Acquisition [Line Items]
Projected Contract Revenue, Contracts to be Sold								$ 550