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Pension and Defined Contribution Plans (Details) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2020 USD ($) participant | Aug. 31, 2019 USD ($) | Aug. 31, 2018 USD ($)
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Non-current liabilities | $ (91.6) | $ (99.7) |
Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Contributions to multi-employer plans | 0.6 | 0.5 | $ 0.5
Domestic Plans | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net periodic pension cost | $ 0.0 | 0.4 | 0.0
Number of early retirement participants | participant | 1 |  |
Change in Benefit Obligation: |  |  |
Benefit obligation at beginning of year | $ 239.2 | 203.2 |
Service cost | 4.3 | 2.9 | 2.7
Interest cost | 6.4 | 7.7 | 7.3
Amendments | 0.0 | 11.4 |
Actuarial losses | 8.5 | 26.2 |
Settlement gain | 0.0 | (3.4) |
Benefits paid | (8.8) | (8.8) |
Other | 0.0 | 0.0 |
Benefit obligation at end of year | 249.6 | 239.2 | 203.2
Change in plan assets: |  |  |
Fair value of plan assets at beginning of year | 151.5 | 149.4 |
Actual return on plan assets | 19.0 | 9.0 |
Employer contributions | 5.4 | 5.3 |
Benefits paid | (8.8) | (12.2) |
Other | 0.0 | 0.0 |
Fair value of plan assets at end of year | 167.1 | 151.5 | 149.4
Funded status at end of year: |  |  |
Funded status at the end of year | (82.5) | (87.7) |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Current liabilities | (5.0) | (1.8) |
Non-current liabilities | (77.5) | (85.9) |
Net amount recognized in consolidated balance sheets | (82.5) | (87.7) |
Accumulated benefit obligation | 249.1 | 239.2 |
Pre-tax amounts in accumulated other comprehensive loss: |  |  |
Prior service cost | (8.4) | (12.4) |
Net actuarial loss | (79.2) | (83.4) |
Amounts in accumulated other comprehensive loss | (87.6) | (95.8) |
Estimated amounts that will be amortized from accumulated comprehensive income over the next fiscal year: |  |  |
Prior service cost | 2.9 | 4.0 |
Net actuarial loss | 4.1 | 4.1 |
International Plans | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net periodic pension cost | 0.0 | 0.0 | 0.0
Change in Benefit Obligation: |  |  |
Benefit obligation at beginning of year | 44.6 | 45.5 |
Service cost | 0.3 | 0.2 | 0.2
Interest cost | 0.9 | 1.3 | 1.3
Amendments | 0.0 | 0.0 |
Actuarial losses | 0.7 | 3.2 |
Settlement gain | 0.0 | 0.0 |
Benefits paid | (1.4) | (2.6) |
Other | 4.1 | (3.0) |
Benefit obligation at end of year | 49.2 | 44.6 | 45.5
Change in plan assets: |  |  |
Fair value of plan assets at beginning of year | 30.7 | 30.9 |
Actual return on plan assets | 1.9 | 3.1 |
Employer contributions | 0.8 | 1.2 |
Benefits paid | (1.4) | (2.6) |
Other | 3.1 | (1.9) |
Fair value of plan assets at end of year | 35.1 | 30.7 | $ 30.9
Funded status at end of year: |  |  |
Funded status at the end of year | (14.1) | (13.9) |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Current liabilities | 0.0 | (0.1) |
Non-current liabilities | (14.1) | (13.8) |
Net amount recognized in consolidated balance sheets | (14.1) | (13.9) |
Accumulated benefit obligation | 49.2 | 44.6 |
Pre-tax amounts in accumulated other comprehensive loss: |  |  |
Prior service cost | 0.0 | 0.0 |
Net actuarial loss | (13.5) | (13.0) |
Amounts in accumulated other comprehensive loss | (13.5) | (13.0) |
Estimated amounts that will be amortized from accumulated comprehensive income over the next fiscal year: |  |  |
Prior service cost | 0.0 | 0.0 |
Net actuarial loss | 0.6 | 1.4 |
Pensions plans in which benefit obligation exceeds plan assets: | Domestic Plans | Pension Plan |  |  |
Pensions plans in which benefit obligation exceeds plan assets: |  |  |
Projected benefit obligation | 249.6 | 239.2 |
Accumulated benefit obligation | 249.1 | 239.2 |
Plan assets | 167.1 | 151.5 |
Pensions plans in which benefit obligation exceeds plan assets: | International Plans | Pension Plan |  |  |
Pensions plans in which benefit obligation exceeds plan assets: |  |  |
Projected benefit obligation | 49.2 | 44.6 |
Accumulated benefit obligation | 49.2 | 44.6 |
Plan assets | $ 35.1 | $ 30.7 |

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- Definition Amount of projected benefit obligation for defined benefit pension plan with projected benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920 + Details
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- Definition Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=109237824&loc=SL108413299-114919 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4587-114921 + Details
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- Definition Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 + Details
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- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109237824&loc=d3e1731-114919 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919 + Details
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