Customer Accounts Receivable - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Apr. 30, 2020	Feb. 01, 2020	Jan. 31, 2020
Receivables [Abstract]
Customer accounts receivable - current	$ 752,960
Allowance for credit losses for customer accounts receivable - current	(204,791)
Customer accounts receivable, net of allowances	548,169	$ 624,041	$ 673,742
Customer accounts receivable - non current	718,847
Allowance for credit losses for customer accounts receivable - non current	(188,462)
Long-term portion of customer accounts receivable, net of allowances	530,385	$ 614,799	663,761
Total customer accounts receivable, net	$ 1,078,554		$ 1,337,503