Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	May 02, 2015	Jan. 31, 2015	May 03, 2014
Assets
Accumulated depreciation	$ 4,793	$ 4,698	$ 4,502
Shareholders' equity
Common stock, no par value (in dollars per share)	$ 0us-gaap_CommonStockNoParValue	$ 0us-gaap_CommonStockNoParValue	$ 0us-gaap_CommonStockNoParValue
Common stock, shares authorized	1,000us-gaap_CommonStockSharesAuthorized	1,000us-gaap_CommonStockSharesAuthorized	1,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	191.0us-gaap_CommonStockSharesIssued	190.1us-gaap_CommonStockSharesIssued	189.3us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	191.0us-gaap_CommonStockSharesOutstanding	190.1us-gaap_CommonStockSharesOutstanding	189.3us-gaap_CommonStockSharesOutstanding

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Face amount per share of no-par value common stock.

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