Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 29, 2022	Oct. 30, 2021
Disaggregation of Revenue [Line Items]
Sales	$ 1,582.7	$ 1,537.8	$ 5,175.9	$ 5,014.7
Bridal
Disaggregation of Revenue [Line Items]
Sales	769.1	698.2	2,386.3	2,211.3
Fashion
Disaggregation of Revenue [Line Items]
Sales	512.8	547.9	1,816.2	1,920.4
Watches
Disaggregation of Revenue [Line Items]
Sales	78.0	92.7	256.1	256.4
Services
Disaggregation of Revenue [Line Items]
Sales	161.3	140.1	504.4	447.1
Other
Disaggregation of Revenue [Line Items]
Sales	61.5	58.9	212.9	179.5
Kay
Disaggregation of Revenue [Line Items]
Sales	535.6	573.4	1,820.4	1,923.8
Zales
Disaggregation of Revenue [Line Items]
Sales	263.2	291.9	929.0	1,030.0
Jared
Disaggregation of Revenue [Line Items]
Sales	267.7	277.1	885.3	873.1
Digital banners
Disaggregation of Revenue [Line Items]
Sales	156.6	90.4	338.5	300.7
Diamonds Direct
Disaggregation of Revenue [Line Items]
Sales	106.4	0.0	325.7	0.0
Banter by Piercing Pagoda
Disaggregation of Revenue [Line Items]
Sales	82.9	111.4	302.1	399.0
Peoples
Disaggregation of Revenue [Line Items]
Sales	40.0	45.9	133.2	121.9
International segment banners
Disaggregation of Revenue [Line Items]
Sales	95.3	120.9	316.9	309.0
Other
Disaggregation of Revenue [Line Items]
Sales	35.0	26.8	124.8	57.2
Store
Disaggregation of Revenue [Line Items]
Sales	1,220.4	1,242.0	4,113.3	4,011.3
E-commerce
Disaggregation of Revenue [Line Items]
Sales	331.1	273.1	949.4	955.6
Other
Disaggregation of Revenue [Line Items]
Sales	31.2	22.7	113.2	47.8
North America
Disaggregation of Revenue [Line Items]
Sales	1,464.8	1,394.2	4,786.2	4,657.9
North America | Bridal
Disaggregation of Revenue [Line Items]
Sales	729.2	640.9	2,247.1	2,064.5
North America | Fashion
Disaggregation of Revenue [Line Items]
Sales	496.4	524.6	1,764.2	1,866.7
North America | Watches
Disaggregation of Revenue [Line Items]
Sales	45.0	48.7	150.0	154.2
North America | Services
Disaggregation of Revenue [Line Items]
Sales	155.3	143.8	484.8	440.8
North America | Other
Disaggregation of Revenue [Line Items]
Sales	38.9	36.2	140.1	131.7
North America | Kay
Disaggregation of Revenue [Line Items]
Sales	535.6	573.4	1,820.4	1,923.8
North America | Zales
Disaggregation of Revenue [Line Items]
Sales	263.2	291.9	929.0	1,030.0
North America | Jared
Disaggregation of Revenue [Line Items]
Sales	267.7	277.1	885.3	873.1
North America | Digital banners
Disaggregation of Revenue [Line Items]
Sales	156.6	90.4	338.5	300.7
North America | Diamonds Direct
Disaggregation of Revenue [Line Items]
Sales	106.4	0.0	325.7	0.0
North America | Banter by Piercing Pagoda
Disaggregation of Revenue [Line Items]
Sales	82.9	111.4	302.1	399.0
North America | Peoples
Disaggregation of Revenue [Line Items]
Sales	40.0	45.9	133.2	121.9
North America | International segment banners
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
North America | Other
Disaggregation of Revenue [Line Items]
Sales	12.4	4.1	52.0	9.4
North America | Store
Disaggregation of Revenue [Line Items]
Sales	1,140.6	1,142.6	3,851.7	3,775.5
North America | E-commerce
Disaggregation of Revenue [Line Items]
Sales	315.6	251.6	894.1	882.4
North America | Other
Disaggregation of Revenue [Line Items]
Sales	8.6	0.0	40.4	0.0
International segment banners
Disaggregation of Revenue [Line Items]
Sales	95.3	120.9	316.9	309.0
International segment banners | Bridal
Disaggregation of Revenue [Line Items]
Sales	39.9	57.3	139.2	146.8
International segment banners | Fashion
Disaggregation of Revenue [Line Items]
Sales	16.4	23.3	52.0	53.7
International segment banners | Watches
Disaggregation of Revenue [Line Items]
Sales	33.0	44.0	106.1	102.2
International segment banners | Services
Disaggregation of Revenue [Line Items]
Sales	6.0	(3.7)	19.6	6.3
International segment banners | Other
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
International segment banners | Kay
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
International segment banners | Zales
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
International segment banners | Jared
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
International segment banners | Digital banners
Disaggregation of Revenue [Line Items]
Sales	0.0
International segment banners | Diamonds Direct
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
International segment banners | Banter by Piercing Pagoda
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
International segment banners | Peoples
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
International segment banners | International segment banners
Disaggregation of Revenue [Line Items]
Sales	95.3	120.9	316.9	309.0
International segment banners | Other
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
International segment banners | Store
Disaggregation of Revenue [Line Items]
Sales	79.8	99.4	261.6	235.8
International segment banners | E-commerce
Disaggregation of Revenue [Line Items]
Sales	15.5	21.5	55.3	73.2
International segment banners | Other
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other
Disaggregation of Revenue [Line Items]
Sales	22.6	22.7	72.8	47.8
Other | Bridal
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Fashion
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Watches
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Services
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Other
Disaggregation of Revenue [Line Items]
Sales	22.6	22.7	72.8	47.8
Other | Kay
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Zales
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Jared
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Digital banners
Disaggregation of Revenue [Line Items]
Sales	0.0
Other | Diamonds Direct
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Banter by Piercing Pagoda
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Peoples
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | International segment banners
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Other
Disaggregation of Revenue [Line Items]
Sales	22.6	22.7	72.8	47.8
Other | Store
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | E-commerce
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | Other
Disaggregation of Revenue [Line Items]
Sales	$ 22.6	$ 22.7	$ 72.8	$ 47.8