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Comprehensive Income (Tables) | 3 Months Ended
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Nov. 30, 2020
Equity [Abstract] |
Changes in each component of accumulated other comprehensive loss | The following tables summarize the changes in each component of accumulated other comprehensive loss during the periods presented (in millions):
| Foreign Currency Items |  | Defined Benefit Pension Plans |  | Accumulated Other Comprehensive Loss Items
Balance at August 31, 2020 | $ | (53.5) |  |  | $ | (79.2) |  |  | $ | (132.7) |
Other comprehensive income before reclassifications | 4.6 |  |  | — |  |  | 4.6 |
Amounts reclassified from accumulated other comprehensive loss (1) | — |  |  | 1.6 |  |  | 1.6 |
Net current period other comprehensive income | 4.6 |  |  | 1.6 |  |  | 6.2 |
Balance at November 30, 2020 | $ | (48.9) |  |  | $ | (77.6) |  |  | $ | (126.5) |
| Foreign Currency Items |  | Defined Benefit Pension Plans |  | Accumulated Other Comprehensive Loss Items
Balance at August 31, 2019 | $ | (65.4) |  |  | $ | (86.0) |  |  | $ | (151.4) |
Other comprehensive income before reclassifications | 1.9 |  |  | — |  |  | 1.9 |
Amounts reclassified from accumulated other comprehensive loss (1) | — |  |  | 1.9 |  |  | 1.9 |
Net current period other comprehensive income | 1.9 |  |  | 1.9 |  |  | 3.8 |
Balance at November 30, 2019 | $ | (63.5) |  |  | $ | (84.1) |  |  | $ | (147.6) |
_______________________________________ (1) The before tax amounts of the defined benefit pension plan items are included in net periodic pension cost. See the Pension and Defined Contribution Plans footnote for additional details.
Schedule of tax expense or benefit allocated to each component of other comprehensive income (loss) | The following table summarizes the tax expense or benefit allocated to each component of other comprehensive income (loss) for the periods presented (in millions):
| Three Months Ended
| November 30, 2020 |  | November 30, 2019
| Before Tax Amount |  | Tax (Expense) Benefit |  | Net of Tax Amount |  | Before Tax Amount |  | Tax (Expense) Benefit |  | Net of Tax Amount
Foreign currency translation adjustments | $ | 4.6 |  |  | $ | — |  |  | $ | 4.6 |  |  | $ | 1.9 |  |  | $ | — |  |  | $ | 1.9 |
Defined benefit pension plans: |  |  |  |  |  |  |  |  |  |  |
Amortization of defined benefit pension items: |  |  |  |  |  |  |  |  |  |  |
Prior service cost | 0.7 |  |  | (0.2) |  |  | 0.5 |  |  | 1.0 |  |  | (0.2) |  |  | 0.8 |
Actuarial losses | 1.4 |  |  | (0.3) |  |  | 1.1 |  |  | 1.4 |  |  | (0.3) |  |  | 1.1 |
Total defined benefit pension plans, net | 2.1 |  |  | (0.5) |  |  | 1.6 |  |  | 2.4 |  |  | (0.5) |  |  | 1.9 |
Other comprehensive income | $ | 6.7 |  |  | $ | (0.5) |  |  | $ | 6.2 |  |  | $ | 4.3 |  |  | $ | (0.5) |  |  | $ | 3.8 |

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e526-108580 + Details
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