The fair values of derivative instruments included on the consolidated balance sheets are as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fair Value at | Accounting for cash flow hedges | | Notional Amount | | Fixed Rate | | Balance Sheet Classification | | May 2, 2020 | | February 1, 2020 | | May 4, 2019 | Interest rate swap | | $ | 600,000 |
| | 3.00 | % | | Other non-current liabilities | | $ | (29,934 | ) | | $ | (20,035 | ) | | $ | (12,336 | ) | Interest rate swap | | 360,000 |
| | 3.00 | % | | Other non-current liabilities | | (17,941 | ) | | (11,997 | ) | | (7,370 | ) | Interest rate swap | | 240,000 |
| | 3.00 | % | | Other non-current liabilities | | (11,965 | ) | | (8,003 | ) | | (4,920 | ) | Net carrying amount | | $ | 1,200,000 |
| | | | Total liabilities | | $ | (59,840 | ) | | $ | (40,035 | ) | | $ | (24,626 | ) |
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