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Business and Summary of Significant Accounting Policies - Adoption of New Accounting Standard - Balance Sheet (Details) - USD ($) $ in Millions | Jan. 31, 2020 | Feb. 01, 2019 | Jan. 31, 2019
--- | --- | --- | ---
ASSETS |  |  |
Prepaid expenses and other current assets | $ 163.3 |  | $ 192.1
Total current assets | 2,659.3 |  | 1,620.0
Operating lease right-of-use assets | 438.8 |  | 0.0
Total assets | 6,179.3 |  | 4,729.2
Current liabilities: |  |  |
Other accrued liabilities | 168.3 |  | 142.3
Operating lease liabilities | 48.1 |  | 0.0
Long-term operating lease liabilities |  |  | 0.0
Long-term other liabilities | 119.8 |  | 121.8
Accumulated deficit | $ (2,295.8) |  | (2,147.4)
Accounting Standards Update 2016-02 |  |  |
ASSETS |  |  |
Prepaid expenses and other current assets |  | $ 186.2 |
Total current assets |  | 1,614.1 |
Operating lease right-of-use assets |  | 283.4 |
Total assets |  | 5,006.7 |
Current liabilities: |  |  |
Other accrued liabilities |  | 137.4 |
Operating lease liabilities |  | 54.1 |
Long-term operating lease liabilities |  | 245.9 |
Long-term other liabilities |  | 104.9 |
Accumulated deficit |  | (2,148.1) |
Restatement Adjustment | 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 |
Long-term other liabilities |  | (16.9) |
Accumulated deficit |  | $ (0.7) |
As reported |  |  |
ASSETS |  |  |
Prepaid expenses and other current assets |  |  | 192.1
Total current assets |  |  | 1,620.0
Total assets |  |  | 4,729.2
Current liabilities: |  |  |
Other accrued liabilities |  |  | 142.3
Long-term other liabilities |  |  | 121.8
Accumulated deficit |  |  | $ (2,147.4)

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