Acquisition | Allocation of Purchase Price (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Feb. 27, 2017	Jan. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 969,168		$ 199,021
TS
Business Acquisition [Line Items]
Cash		$ 176,000
Accounts receivable		1,829,000
Inventories		239,000
Prepaid expenses and other current assets		100,000
Property and equipment, net		62,000
Goodwill		722,000
Intangible assets		919,000
Other assets, net		158,000
Total assets		4,205,000
Other current liabilities		1,170,000
Revolving credit loans and long-term debt		134,000
Other long-term liabilities		99,000
Total liabilities		1,403,000
Purchase price		$ 2,802,000