Accounts Payable and Accrued Liabilities (Narrative) (Details) - USD ($) $ in Millions	Jan. 28, 2023	Jan. 29, 2022
Accounts Payable and Accrued Liabilities, Current [Abstract]
Workers compensation and general liability reserves covered by deposits and receivables	$ 102	$ 102

Workers compensation and general liability reserves covered by deposits and receivables

No definition available.

Name:	m_WorkersCompensationAndGeneralLiabilityReservesCoveredByDepositsAndReceivables
Namespace Prefix:	m_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant