Receivables and Revenue Recognition (Tables)

3 Months Ended

Apr. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

	Three Months Ended April 30,
(in millions)	2018		2017
Net sales*:
Jewelry collections	$	529.3	$	449.9
Engagement jewelry	294.5		264.6
Designer jewelry	128.4		115.4
All other	81.0		69.7
	$	1,033.2	$	899.6