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Recently Issued Accounting Standards (Adoption of New Accounting Standard - Balance Sheet) (Details) - USD ($) $ in Millions | Jul. 31, 2019 | Feb. 01, 2019 | Jan. 31, 2019
--- | --- | --- | ---
ASSETS |  |  |
Prepaid expenses and other current assets | $ 176.8 | $ 186.2 | $ 192.1
Total current assets | 1,515.5 | 1,614.1 | 1,620.0
Operating lease right-of-use assets | 298.8 | 283.4 |
Total assets | 4,872.7 | 5,006.7 | 4,729.2
Current liabilities: |  |  |
Other accrued liabilities | 114.4 | 137.4 | 142.3
Operating lease liabilities | 58.9 | 54.1 |
Long-term operating lease liabilities | 258.1 | 245.9 |
Other liabilities | 116.0 | 104.9 | 121.8
Accumulated deficit | $ (2,224.3) | (2,148.1) | $ (2,147.4)
Accounting Standards Update 2016-02 |  |  |
ASSETS |  |  |
Prepaid expenses and other current assets |  | (5.9) |
Total current assets |  | (5.9) |
Operating lease right-of-use assets |  | 283.4 |
Total assets |  | 277.5 |
Current liabilities: |  |  |
Other accrued liabilities |  | (4.9) |
Operating lease liabilities |  | 54.1 |
Long-term operating lease liabilities |  | 245.9 |
Other liabilities |  | (16.9) |
Accumulated deficit |  | $ (0.7) |

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