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CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE (LOSS) INCOME (Parenthetical) (Parentheticals) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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May 02, 2020 | Apr. 27, 2019 | May 02, 2020 | Apr. 27, 2019
Statement of Comprehensive Income [Abstract] |  |  |  |
Change in pension benefit obligation, tax (benefit) | $ (0.2) | $ 0.0 | $ 2.4 | $ 0.0
Change in fair value of swap agreements, tax (benefit) | $ (13.4) | $ (6.0) | $ (15.9) | $ (9.9)

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- Definition Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580 + Details
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