Fair Value Measurements and Concentrations of Credit Risk - Estimated Fair Value of Company Long Term Debt (Details) - USD ($) $ in Millions	Feb. 01, 2025	Feb. 03, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Notional amount	$ 2,785	$ 3,007
Carrying amount	2,779	2,998
Fair value	$ 2,467	$ 2,706

Long-Term Debt, Including Current Maturities, Fair Value

No definition available.

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