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LONG-TERM DEBT AND REVOLVING CREDIT FACILITY - Schedule of Net Interest Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 28, 2021 | Feb. 23, 2020 | Feb. 28, 2021 | Feb. 23, 2020
Debt Disclosure [Abstract] |  |  |  |
Long-term debt | $ 102.7 | $ 120.6 | $ 329.9 | $ 368.1
Short-term debt | 1.0 |  | 1.5 | 0.9
Interest income | (0.4) | (1.3) | (1.6) | (2.3)
Interest capitalized | (2.7) | (1.6) | (7.8) | (4.9)
Net interest expense | $ 100.6 | $ 117.7 | $ 322.0 | $ 361.8

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- Definition Aggregate amount of interest paid or due on all long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.8) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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