Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Disaggregation of Revenue [Line Items]
Sales	$ 1,754.9	$ 1,788.1	$ 3,593.2	$ 3,476.9
Bridal
Disaggregation of Revenue [Line Items]
Sales	779.8	757.6	1,617.2	1,513.1
Fashion
Disaggregation of Revenue [Line Items]
Sales	627.5	701.4	1,303.4	1,372.5
Watches
Disaggregation of Revenue [Line Items]
Sales	91.4	99.6	178.1	163.7
Services
Disaggregation of Revenue [Line Items]
Sales	170.1	159.4	343.1	307.0
Other
Disaggregation of Revenue [Line Items]
Sales	86.1	70.1	151.4	120.6
Kay
Disaggregation of Revenue [Line Items]
Sales	617.5	673.7	1,284.8	1,350.4
Zales
Disaggregation of Revenue [Line Items]
Sales	318.1	367.3	665.8	738.1
Jared
Disaggregation of Revenue [Line Items]
Sales	303.5	311.9	617.6	596.0
Diamonds Direct
Disaggregation of Revenue [Line Items]
Sales	113.0	0.0	219.3	0.0
Banter by Piercing Pagoda
Disaggregation of Revenue [Line Items]
Sales	100.2	138.7	219.2	287.6
James Allen
Disaggregation of Revenue [Line Items]
Sales	88.6	108.8	181.9	210.3
Peoples
Disaggregation of Revenue [Line Items]
Sales	47.8	41.4	93.2	76.0
International segment banners
Disaggregation of Revenue [Line Items]
Sales	111.6	130.7	221.6	188.1
Other
Disaggregation of Revenue [Line Items]
Sales	54.6	15.6	89.8	30.4
Store
Disaggregation of Revenue [Line Items]
Sales	1,406.5	1,440.2	2,892.9	2,769.3
E-commerce
Disaggregation of Revenue [Line Items]
Sales	297.8	336.2	618.3	682.5
Other
Disaggregation of Revenue [Line Items]
Sales	50.6	11.7	82.0	25.1
North America
Disaggregation of Revenue [Line Items]
Sales	1,616.4	1,645.7	3,321.4	3,263.7
North America | Bridal
Disaggregation of Revenue [Line Items]
Sales	730.6	696.9	1,517.9	1,423.6
North America | Fashion
Disaggregation of Revenue [Line Items]
Sales	609.6	680.7	1,267.8	1,342.1
North America | Watches
Disaggregation of Revenue [Line Items]
Sales	53.5	58.6	105.0	105.5
North America | Services
Disaggregation of Revenue [Line Items]
Sales	163.5	151.1	329.5	297.0
North America | Other
Disaggregation of Revenue [Line Items]
Sales	59.2	58.4	101.2	95.5
North America | Kay
Disaggregation of Revenue [Line Items]
Sales	617.5	673.7	1,284.8	1,350.4
North America | Zales
Disaggregation of Revenue [Line Items]
Sales	318.1	367.3	665.8	738.1
North America | Jared
Disaggregation of Revenue [Line Items]
Sales	303.5	311.9	617.6	596.0
North America | Diamonds Direct
Disaggregation of Revenue [Line Items]
Sales	113.0	0.0	219.3	0.0
North America | Banter by Piercing Pagoda
Disaggregation of Revenue [Line Items]
Sales	100.2	138.7	219.2	287.6
North America | James Allen
Disaggregation of Revenue [Line Items]
Sales	88.6	108.8	181.9	210.3
North America | Peoples
Disaggregation of Revenue [Line Items]
Sales	47.8	41.4	93.2	76.0
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	27.7	3.9	39.6	5.3
North America | Store
Disaggregation of Revenue [Line Items]
Sales	1,314.6	1,333.3	2,711.1	2,632.9
North America | E-commerce
Disaggregation of Revenue [Line Items]
Sales	278.1	312.4	578.5	630.8
North America | Other
Disaggregation of Revenue [Line Items]
Sales	23.7	0.0	31.8	0.0
International segment banners
Disaggregation of Revenue [Line Items]
Sales	111.6	130.7	221.6	188.1
International segment banners | Bridal
Disaggregation of Revenue [Line Items]
Sales	49.2	60.7	99.3	89.5
International segment banners | Fashion
Disaggregation of Revenue [Line Items]
Sales	17.9	20.7	35.6	30.4
International segment banners | Watches
Disaggregation of Revenue [Line Items]
Sales	37.9	41.0	73.1	58.2
International segment banners | Services
Disaggregation of Revenue [Line Items]
Sales	6.6	8.3	13.6	10.0
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 | Diamonds Direct
Disaggregation of Revenue [Line Items]
Sales	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 | James Allen
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	111.6	130.7	221.6	188.1
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	91.9	106.9	181.8	136.4
International segment banners | E-commerce
Disaggregation of Revenue [Line Items]
Sales	19.7	23.8	39.8	51.7
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	26.9	11.7	50.2	25.1
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	26.9	11.7	50.2	25.1
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 | Diamonds Direct
Disaggregation of Revenue [Line Items]
Sales	0.0
Other | Banter by Piercing Pagoda
Disaggregation of Revenue [Line Items]
Sales	0.0	0.0	0.0	0.0
Other | James Allen
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	26.9	11.7	50.2	25.1
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	$ 26.9	$ 11.7	$ 50.2	$ 25.1