Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2023	Jan. 29, 2022	Jan. 30, 2021
Pre-tax amount
Foreign currency translation adjustments	$ (24.1)	$ (5.4)	$ 11.2
Available-for-sale securities:
Unrealized (loss) gain	(0.4)	(0.3)	0.2
Cash flow hedges:
Unrealized gain (loss)	1.8	0.6	(1.0)
Reclassification adjustment for (gains) losses to earnings	(1.7)	1.0	(16.8)
Pension plan:
Actuarial (loss) gain	(0.5)	(71.4)	5.4
Reclassification adjustment for amortization of actuarial losses to earnings	3.5	2.1	1.0
Reclassification adjustment for amortization of net prior service costs to earnings	0.3	0.1	0.1
Reclassification adjustment for pension settlement loss to earnings	133.7	0.0	0.0
Total other comprehensive income (loss)	112.6	(73.3)	0.1
Tax (expense) benefit
Foreign currency translation adjustments	0.0	0.0	0.0
Available-for-sale securities:
Unrealized (loss) gain	0.0	0.0	0.0
Cash flow hedges:
Unrealized gain (loss)	(0.3)	0.0	0.2
Reclassification adjustment for (gains) losses to earnings	0.3	(0.3)	4.2
Pension plan:
Actuarial (loss) gain	0.1	13.5	(1.0)
Reclassification adjustment for amortization of actuarial losses to earnings	(0.7)	(0.3)	(0.2)
Reclassification adjustment for amortization of net prior service costs to earnings	0.0	0.0	0.0
Reclassification adjustment for pension settlement loss to earnings	(25.3)	0.0	0.0
Total other comprehensive income (loss)	(25.9)	12.9	3.2
After-tax amount
Net loss	376.7	769.9	(15.2)
Foreign currency translation adjustments	(24.1)	(5.4)	11.2
Available-for-sale securities:
Unrealized (loss) gain	(0.4)	(0.3)	0.2
Cash flow hedges:
Unrealized gain (loss)	1.5	0.6	(0.8)
Reclassification adjustment for (gains) losses to earnings	(1.4)	0.7	(12.6)
Pension plan:
Actuarial (loss) gain	(0.4)	(57.9)	4.4
Reclassification adjustment for amortization of actuarial losses to earnings	2.8	1.8	0.8
Reclassification adjustment for amortization of net prior service costs to earnings	0.3	0.1	0.1
Reclassification adjustment for pension settlement loss to earnings	108.4	0.0	0.0
Total other comprehensive income (loss)	86.7	(60.4)	3.3
Total comprehensive income (loss)	$ 463.4	$ 709.5	$ (11.9)