Restructuring and Strategic Charges - Summary of Restructuring and Strategic Charges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Restructuring Cost and Reserve [Line Items]
Impairment charges		$ 0		$ 1,453
Total restructuring and strategic charges, pre-tax	$ 0	10,820	$ 0	31,027
Continuing employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and strategic charges, pre-tax		781		1,796
Severance charges
Restructuring Cost and Reserve [Line Items]
Restructuring and strategic charges, pre-tax		65		9,485
Proxy solicitation costs
Restructuring Cost and Reserve [Line Items]
Restructuring and strategic charges, pre-tax		108		5,697
Lease termination charges
Restructuring Cost and Reserve [Line Items]
Restructuring and strategic charges, pre-tax		79		427
Outside Services
Restructuring Cost and Reserve [Line Items]
Restructuring and strategic charges, pre-tax		9,779		12,013
Other charges
Restructuring Cost and Reserve [Line Items]
Restructuring and strategic charges, pre-tax		$ 8		$ 156