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BORROWING ARRANGEMENTS (Details)	3 Months Ended		9 Months Ended
	Oct. 31, 2021 USD ($)	Nov. 01, 2020 USD ($)	Oct. 31, 2021 USD ($)	Nov. 01, 2020 USD ($)	Aug. 22, 2021 USD ($) facility	Jan. 31, 2021 USD ($)
Debt Instrument [Line Items]
Borrowings under revolving line of credit			$ 0	$ 487,823,000
Outstanding letter of credit facilities	$ 7,542,000		7,542,000
Standby Letters of Credit
Debt Instrument [Line Items]
Amount issued but undrawn under credit facility	11,919,000		11,919,000
Letter of Credit Facility Renewed and Extended
Debt Instrument [Line Items]
Number of facilities | facility					3
Maximum borrowing capacity of letter of credit after renewal					$ 35,000,000
Unsecured Revolving Line of Credit
Debt Instrument [Line Items]
Current borrowing capacity	500,000,000		500,000,000
Maximum borrowing capacity including additional borrowing capacity	250,000,000		250,000,000
Borrowings under revolving line of credit	0	$ 0	0	$ 487,823,000
Weighted average interest rate		2.47%		2.47%
Unsecured Revolving Line of Credit | Maximum
Debt Instrument [Line Items]
Additional borrowing capacity	$ 750,000,000		$ 750,000,000
Unsecured Revolving Line of Credit | Margin Based on Leverage Ratio | Minimum
Debt Instrument [Line Items]
Leverage ratio			0.91%
Unsecured Revolving Line of Credit | Margin Based on Leverage Ratio | Maximum
Debt Instrument [Line Items]
Leverage ratio			1.775%
Unsecured Revolving Line of Credit | Base Rate | Minimum
Debt Instrument [Line Items]
Leverage ratio			0.00%
Unsecured Revolving Line of Credit | Base Rate | Maximum
Debt Instrument [Line Items]
Leverage ratio			0.775%
Unsecured Term Loan Facility
Debt Instrument [Line Items]
Face amount						$ 300,000,000

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