Leases (Rent Expense) (Details) $ in Millions	Feb. 01, 2020 USD ($)
Operating Leases, Rent Expense [Line Items]
Total leased liabilities	$ 1,176

[Line Items] for Operating Leases, Rent Expense [Table]

No definition available.

Name:	jcp_OperatingLeasesRentExpenseLineItems
Namespace Prefix:	jcp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration