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Fair Value Measurements - Investment Impairments and Credit Loss Reserves (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Oct. 31, 2021	Oct. 30, 2022	Oct. 31, 2021	Jan. 30, 2022
Fair Value Disclosures [Abstract]
Credit loss reserve for held-to-maturity debt securities and available for sale debt securities		$ 4.1		$ 4.5
Increase (decrease) in credit loss reserve for available-for-sale and held-to-maturity debt securities	$ 0.2	$ (0.4)	$ 0.9

X

- Definition

Debt Securities, Allowance For Credit Loss

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X

- Definition

Debt Securities, Available-for-sale and Held To Maturity, Allowance for Credit Loss, Period Increase (Decrease)

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No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

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