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Changes in Accumulated Other Comprehensive Loss (Pre-Tax) (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 02, 2013
Pension Benefits
Schedule of Pension and Other Postretirement Benefits Recognized in Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost (income) during the next year	$ 17
Postretirement Benefits
Schedule of Pension and Other Postretirement Benefits Recognized in Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost (income) during the next year	$ (3)

The amounts in accumulated other comprehensive income related to prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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