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New Accounting Pronouncements (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
May 31, 2019 | May 31, 2018 | May 31, 2019 | May 31, 2018 | Sep. 01, 2018
New Accounting Pronouncement, Early Adoption [Line Items] |  |  |  |  |
Decrease in cash flows from operations |  |  | $ (312.0) | $ (299.7) |
Increase in cash flows from investing activities |  |  | (36.9) | (194.7) |
Increase to operating profit and corresponding increase to Miscellaneous expense (income) | $ (0.2) | $ 0.2 | (2.6) | (3.8) |
ASU 2016-15 |  |  |  |  |
New Accounting Pronouncement, Early Adoption [Line Items] |  |  |  |  |
Proceeds from corporate-owned life insurance policies |  |  | $ 0.8 | 1.0 |
Decrease in cash flows from operations |  |  |  | 1.0 |
Increase in cash flows from investing activities |  |  |  | 1.0 |
ASU 2017-07 |  |  |  |  |
New Accounting Pronouncement, Early Adoption [Line Items] |  |  |  |  |
Increase to operating profit and corresponding increase to Miscellaneous expense (income) |  | $ (1.5) |  | $ (4.6) |
ASC 606 |  |  |  |  |
New Accounting Pronouncement, Early Adoption [Line Items] |  |  |  |  |
ASC 606 adjustments |  |  |  |  | $ 13.0

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