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Segment Information - Summary of Activity by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 03, 2018 | Oct. 28, 2017 | Jul. 29, 2017 | Apr. 29, 2017 | Jan. 28, 2017 | Oct. 29, 2016 | Jul. 30, 2016 | Apr. 30, 2016 | Feb. 03, 2018 | Jan. 28, 2017 | Jan. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 2,293.1 | $ 1,156.9 | $ 1,399.6 | $ 1,403.4 | $ 2,269.9 | $ 1,186.2 | $ 1,373.4 | $ 1,578.9 | $ 6,253.0 | $ 6,408.4 | $ 6,550.2
Operating income (loss) |  |  |  |  |  |  |  |  | 579.9 | 763.2 | 703.7
Depreciation and amortization |  |  |  |  |  |  |  |  | 203.4 | 188.8 | 175.3
Capital additions |  |  |  |  |  |  |  |  | 237.4 | 278.0 | 226.5
Credit transaction, net |  |  |  |  |  |  |  |  | (30.9) | 0.0 | 0.0
Total assets | 5,839.6 |  |  |  | 6,597.8 |  |  |  | 5,839.6 | 6,597.8 |
Total long-lived assets | 2,181.1 |  |  |  | 1,757.5 |  |  |  | 2,181.1 | 1,757.5 |
Total liabilities | 2,726.2 |  |  |  | 3,495.7 |  |  |  | 2,726.2 | 3,495.7 |
Sterling Jewelers |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 3,820.5 | 3,930.4 | 3,988.7
Operating income (loss) |  |  |  |  |  |  |  |  | 576.0 | 715.8 | 718.6
Depreciation and amortization |  |  |  |  |  |  |  |  | 121.8 | 112.7 | 106.2
Capital additions |  |  |  |  |  |  |  |  | 134.8 | 154.5 | 141.6
Total assets | 3,279.4 |  |  |  | 4,015.4 |  |  |  | 3,279.4 | 4,015.4 |
Total long-lived assets | 956.3 |  |  |  | 567.3 |  |  |  | 956.3 | 567.3 |
Total liabilities | 1,482.4 |  |  |  | 2,061.4 |  |  |  | 1,482.4 | 2,061.4 |
Zale Jewelry |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 1,516.2 | 1,549.7 | 1,568.2
Operating income (loss) |  |  |  |  |  |  |  |  | 66.7 | 62.2 | 44.3
Depreciation and amortization |  |  |  |  |  |  |  |  | 55.3 | 49.1 | 44.8
Capital additions |  |  |  |  |  |  |  |  | 76.3 | 85.0 | 47.7
Total assets | 1,879.4 |  |  |  | 1,940.7 |  |  |  | 1,879.4 | 1,940.7 |
Total long-lived assets | 1,075.6 |  |  |  | 1,050.1 |  |  |  | 1,075.6 | 1,050.1 |
Total liabilities | 439.9 |  |  |  | 524.3 |  |  |  | 439.9 | 524.3 |
Zale Jewelry | Canada |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 235.1 | 234.6 | 248.7
Piercing Pagoda |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 278.5 | 263.1 | 243.2
Operating income (loss) |  |  |  |  |  |  |  |  | 13.4 | 11.2 | 7.8
Depreciation and amortization |  |  |  |  |  |  |  |  | 6.4 | 4.6 | 3.3
Capital additions |  |  |  |  |  |  |  |  | 8.6 | 12.7 | 10.2
Total assets | 150.2 |  |  |  | 141.6 |  |  |  | 150.2 | 141.6 |
Total long-lived assets | 63.6 |  |  |  | 61.4 |  |  |  | 63.6 | 61.4 |
Total liabilities | 28.8 |  |  |  | 28.2 |  |  |  | 28.8 | 28.2 |
UK Jewelry |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 616.7 | 647.1 | 737.6
Operating income (loss) |  |  |  |  |  |  |  |  | 33.1 | 45.6 | 61.5
Depreciation and amortization |  |  |  |  |  |  |  |  | 19.1 | 21.6 | 20.1
Capital additions |  |  |  |  |  |  |  |  | 17.6 | 25.7 | 26.4
Total assets | 420.3 |  |  |  | 372.6 |  |  |  | 420.3 | 372.6 |
Total long-lived assets | 78.3 |  |  |  | 70.7 |  |  |  | 78.3 | 70.7 |
Total liabilities | 98.9 |  |  |  | 110.6 |  |  |  | 98.9 | 110.6 |
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 21.1 | 18.1 | 12.5
Operating income (loss) |  |  |  |  |  |  |  |  | (109.3) | (71.6) | (128.5)
Depreciation and amortization |  |  |  |  |  |  |  |  | 0.8 | 0.8 | 0.9
Capital additions |  |  |  |  |  |  |  |  | 0.1 | 0.1 | 0.6
Acquisition integration and severance related costs |  |  |  |  |  |  |  |  |  | 28.4 | (78.9)
Total assets | 110.3 |  |  |  | 127.5 |  |  |  | 110.3 | 127.5 |
Total long-lived assets | 7.3 |  |  |  | 8.0 |  |  |  | 7.3 | 8.0 |
Total liabilities | $ 676.2 |  |  |  | $ 771.2 |  |  |  | 676.2 | 771.2 |
Diamonds and diamond jewelry |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 3,742.8 | 3,853.7 | 3,918.1
Gold, silver jewelry, other products and services |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 2,067.2 | 2,090.0 | 2,116.4
Watches |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 443.0 | 464.7 | 515.7
Consumer Portfolio Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Credit transaction, net |  |  |  |  |  |  |  |  | 20.7 | $ 0.0 | $ 0.0
Consumer Portfolio Segment | Sterling Jewelers |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Credit transaction, net |  |  |  |  |  |  |  |  | 10.2 |  |
Consumer Portfolio Segment | Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  |  |  | (29.6) |  |
R2Net Inc. |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquisition related costs |  |  |  |  |  |  |  |  | 8.6 |  |
Chief Executive Officer | Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transition costs related to officers |  |  |  |  |  |  |  |  | $ 3.4 |  |

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