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Summary of Significant Accounting Policies (Narrative) (Details)	Apr. 30, 2011
Number of states in which Macy's operates	45
Minimum [Member]
Number of stores	850

X

- Definition

The number of states the entity operates in as of the balance sheet date.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of stores.

+ Details

Name:	us-gaap_NumberOfStores
Namespace Prefix:	us-gaap
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant