XML 56 R39.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Benefit Plans (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Benefit Plans [Abstract] |
Obligations and funded status of pension and other postretirement benefit plans | The following table set forth Company's pension obligation and funded status at December 31:
|  | Pension Benefits |  |  | Post-Retirement Benefits |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
|  | (millions of dollars) |
Change in benefit obligations: |  |  |  |  |  |  |  |  |  |  |  |
Beginning projected benefit obligation |  | $ | 427.9 |  |  | $ | 416.6 |  |  | $ | 9.3 |  |  | $ | 9.3 |
Service cost |  |  | 7.9 |  |  |  | 8.2 |  |  |  | 0.3 |  |  |  | 0.3 |
Interest cost |  |  | 12.6 |  |  |  | 13.0 |  |  |  | 0.3 |  |  |  | 0.3 |
Actuarial (gain)/loss |  |  | 31.5 |  |  |  | 21.2 |  |  |  | (3.0 | ) |  |  | (0.6 | )
Benefits paid |  |  | (20.4 | ) |  |  | (18.3 | ) |  |  | (0.1 | ) |  |  | - |
Settlements |  |  | - |  |  |  | (0.9 | ) |  |  |  |  |  |  |  |
Foreign exchange impact |  |  | 9.6 |  |  |  | (11.4 | ) |  |  | 0.1 |  |  |  | - |
Other |  |  | 0.4 |  |  |  | (0.5 | ) |  |  | - |  |  |  |  |
Ending projected benefit obligation |  |  | 469.5 |  |  |  | 427.9 |  |  |  | 6.9 |  |  |  | 9.3 |
Change in plan assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning fair value |  |  | 289.3 |  |  |  | 282.5 |  |  |  | - |  |  |  | - |
Actual return on plan assets |  |  | 33.8 |  |  |  | 22.9 |  |  |  | - |  |  |  | - |
Employer contributions |  |  | 10.7 |  |  |  | 10.5 |  |  |  | 0.1 |  |  |  | - |
Plan participants' contributions |  |  | 0.4 |  |  |  | 0.4 |  |  |  | - |  |  |  | - |
Benefits paid |  |  | (20.4 | ) |  |  | (18.3 | ) |  |  | (0.1 | ) |  |  | - |
Settlements |  |  | (0.8 | ) |  |  | (0.5 | ) |  |  | - |  |  |  | - |
Foreign exchange impact |  |  | 7.2 |  |  |  | (8.2 | ) |  |  | - |  |  |  | - |
Ending fair value |  |  | 320.2 |  |  |  | 289.3 |  |  |  | - |  |  |  | - |
Funded status of the plan |  | $ | (149.3 | ) |  | $ | (138.6 | ) |  | $ | (6.9 | ) |  | $ | (9.3 | )
Amounts recognized in the consolidated balance sheet | Amounts recognized in the consolidated balance sheet consist of:
|  | Pension Benefits |  |  | Post-Retirement Benefits |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
|  | (millions of dollars) |
Current liability |  | $ | (0.8 | ) |  | $ | (0.8 | ) |  | $ | (0.5 | ) |  | $ | (0.6 | )
Non-current liability |  |  | (148.5 | ) |  |  | (137.8 | ) |  |  | (6.4 | ) |  |  | (8.7 | )
Recognized liability |  | $ | (149.3 | ) |  | $ | (138.6 | ) |  | $ | (6.9 | ) |  | $ | (9.3 | )
Amounts recognized in accumulated other comprehensive income | Amounts recognized in accumulated other comprehensive income, net of related tax effects, consist of:
|  | Pension Benefits |  |  | Post-Retirement Benefits |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
|  | (millions of dollars) |
Net actuarial (gain) loss |  | $ | 91.4 |  |  | $ | 82.1 |  |  | $ | (4.1 | ) |  | $ | (1.7 | )
Prior service cost |  |  | (0.1 | ) |  |  | (0.1 | ) |  |  | (0.7 | ) |  |  | (2.4 | )
Amount recognized end of year |  | $ | 91.3 |  |  | $ | 82.0 |  |  | $ | (4.8 | ) |  | $ | (4.1 | )
Change in plan assets and benefit obligations recognized in other comprehensive income | Changes in the Plan assets and benefit obligations recognized in other comprehensive income:
|  | Pension Benefits |  |  | Post-Retirement Benefits |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
|  | (millions of dollars) |
Current year actuarial gain (loss) |  | $ | (15.8 | ) |  | $ | (8.7 | ) |  | $ | 2.6 |  |  | $ | 0.3 |
Amortization of actuarial (gain) loss |  |  | 7.2 |  |  |  | 6.8 |  |  |  | (0.2 | ) |  |  | (0.1 | )
Amortization of prior service credit (gain) loss |  |  | - |  |  |  | 0.4 |  |  |  | (2.3 | ) |  |  | (1.9 | )
Total recognized in other comprehensive income |  | $ | (8.6 | ) |  | $ | (1.5 | ) |  | $ | 0.1 |  |  | $ | (1.7 | )
Components of net periodic benefit cost | The components of net periodic benefit costs are as follows:
|  | Pension Benefits |  |  | Post-Retirement Benefits |
|  | 2017 |  |  | 2016 |  |  | 2015 |  |  | 2017 |  |  | 2016 |  |  | 2015 |
|  | (millions of dollars) |
Service cost |  | $ | 7.9 |  |  | $ | 8.2 |  |  | $ | 10.3 |  |  | $ | 0.3 |  |  | $ | 0.3 |  |  | $ | 0.4 |
Interest cost |  |  | 12.6 |  |  |  | 13.0 |  |  |  | 15.4 |  |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.3 |
Expected return on plan assets |  |  | (18.7 | ) |  |  | (18.6 | ) |  |  | (19.7 | ) |  |  | - |  |  |  | - |  |  |  | - |
Amortization of prior service cost |  |  | - |  |  |  | 0.6 |  |  |  | 0.8 |  |  |  | (3.1 | ) |  |  | (3.1 | ) |  |  | (3.1 | )
Recognized net actuarial (gain) loss |  |  | 10.8 |  |  |  | 10.7 |  |  |  | 12.1 |  |  |  | (0.3 | ) |  |  | (0.2 | ) |  |  | (0.1 | )
Settlement/curtailment loss |  |  | - |  |  |  | 0.3 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Net periodic benefit cost |  | $ | 12.6 |  |  | $ | 14.2 |  |  | $ | 18.9 |  |  | $ | (2.8 | ) |  | $ | (2.7 | ) |  | $ | (2.5 | )
Estimated amortization of amounts in other accumulated comprehensive income to be recognized in next fiscal year | The 2018 estimated amortization of amounts in other accumulated comprehensive income are as follows:
|  | Pension Benefits |  |  | Post-Retirement Benefits |
|  | (millions of dollars) |
Amortization of prior service credit (gain) loss |  | $ | - |  |  | $ | (0.9 | )
Amortization of net (gain) loss |  |  | 11.5 |  |  |  | (0.6 | )
Total cost to be recognized |  | $ | 11.5 |  |  | $ | (1.5 | )
Weighted average assumptions used to determine net periodic benefit cost and benefit obligation | The weighted average assumptions used to determine net periodic benefit cost in the accounting for the pension benefit plans and other benefit plans for the years ended December 31, 2017, 2016 and 2015 are as follows:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Discount rate |  |  | 3.56 | % |  |  | 3.88 | % |  |  | 3.71 | %
Expected return on plan assets |  |  | 6.61 | % |  |  | 6.89 | % |  |  | 6.89 | %
Rate of compensation increase |  |  | 3.01 | % |  |  | 3.03 | % |  |  | 3.04 | %
The weighted average assumptions used to determine benefit obligations for the pension benefit plans and other benefit plans at December 31, 2017, 2016 and 2015 are as follows:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Discount rate |  |  | 3.16 | % |  |  | 3.60 | % |  |  | 3.89 | %
Rate of compensation increase |  |  | 3.01 | % |  |  | 2.96 | % |  |  | 3.04 | %
Weighted average asset allocation percentages | The Company's pension plan weighted average asset allocation percentages at December 31, 2017 and 2016 by asset category are as follows:
Asset Category |  | 2017 |  |  | 2016 |
Equity securities |  |  | 56.0 | % |  |  | 60.2 | %
Fixed income securities |  |  | 36.2 | % |  |  | 32.7 | %
Real estate |  |  | 0.8 | % |  |  | 0.7 | %
Other |  |  | 7.0 | % |  |  | 6.4 | %
Total |  |  | 100.0 | % |  |  | 100.0 | %
Fair value of plan assets by asset category | The Company's pension plan fair values at December 31, 2017 and 2016 by asset category are as follows:
Asset Category |  | 2017 |  |  | 2016 |
|  | (millions of dollars) |
Equity securities |  | $ | 179.2 |  |  | $ | 174.1 |
Fixed income securities |  |  | 116.0 |  |  |  | 94.7 |
Real estate |  |  | 2.4 |  |  |  | 1.9 |
Other |  |  | 22.6 |  |  |  | 18.6 |
Total |  | $ | 320.2 |  |  | $ | 289.3 |
Fair value of plan assets by geographic location | The following table presents domestic and foreign pension plan assets information at December 31, 2017, 2016 and 2015 (the measurement date of pension plan assets):
|  | U.S. Plans |  |  | International Plans |
|  | 2017 |  |  | 2016 |  |  | 2015 |  |  | 2017 |  |  | 2016 |  |  | 2015 |
|  | (millions of dollars) |
Fair value of plan assets |  | $ | 241.9 |  |  | $ | 221.9 |  |  | $ | 213.0 |  |  | $ | 78.3 |  |  | $ | 67.4 |  |  | $ | 69.5 |
Defined benefit pension plan assets measured at fair value | The following table summarizes our defined benefit pension plan assets measured at fair value as of December 31, 2017:
Pension Assets Fair Value as of December 31, 2017 |  | Quoted Prices In Active Markets for Identical Assets |  |  | Significant Other Observable Inputs |  |  | Significant Unobservable Inputs |  |  | Total |
| (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  |  |
|  | (millions of dollars) |
Equity securities |  |  |  |  |  |  |  |  |  |  |  |
US equities |  | $ | 156.1 |  |  | $ | - |  |  | $ | - |  |  | $ | 156.1 |
Non-US equities |  |  | 23.1 |  |  |  | - |  |  |  | - |  |  |  | 23.1 |
Fixed income securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt instruments |  |  | 82.0 |  |  |  | 34.0 |  |  |  | - |  |  |  | 116.0 |
Real estate and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate |  |  | - |  |  |  | - |  |  |  | 2.4 |  |  |  | 2.4 |
Other |  |  | 0.2 |  |  |  | - |  |  |  | 22.4 |  |  |  | 22.6 |
Total assets |  | $ | 261.4 |  |  | $ | 34.0 |  |  | $ | 24.8 |  |  | $ | 320.2 |
The following table summarizes our defined benefit pension plan assets measured at fair value as of December 31, 2016:
Pension Assets Fair Value as of December 31, 2016 |  | Quoted Prices In Active Markets for Identical Assets |  |  | Significant Other Observable Inputs |  |  | Significant Unobservable Inputs |  |  | Total |
| (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  |  |
|  | (millions of dollars) |
Equity securities |  |  |  |  |  |  |  |  |  |  |  |
US equities |  | $ | 155.0 |  |  | $ | 0.2 |  |  | $ | - |  |  | $ | 155.2 |
Non-US equities |  |  | 18.9 |  |  |  | - |  |  |  | - |  |  |  | 18.9 |
Fixed income securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt instruments |  |  | 63.4 |  |  |  | 31.3 |  |  |  | - |  |  |  | 94.7 |
Real estate and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate |  |  | - |  |  |  | - |  |  |  | 1.9 |  |  |  | 1.9 |
Other |  |  | - |  |  |  | 0.2 |  |  |  | 18.4 |  |  |  | 18.6 |
Total assets |  | $ | 237.3 |  |  | $ | 31.7 |  |  | $ | 20.3 |  |  | $ | 289.3 |
Reconciliation of changes in fair value measurement of plan assets using significant unobservable inputs (Level 3) | The following is a reconciliation of changes in fair value measurement of plan assets using significant unobservable inputs (Level 3):
|  | (millions of dollars) |
Beginning balance at December 31, 2015 |  | $ | 17.9 |
Purchases, sales, settlements |  |  | - |
Actual return on plan assets still held at reporting date |  |  | 3.0 |
Foreign exchange impact |  |  | (0.6 | )
Ending balance at December 31, 2016 |  | $ | 20.3 |
Purchases, sales, settlements |  |  | - |
Actual return on plan assets still held at reporting date |  |  | 3.9 |
Foreign exchange impact |  |  | 0.5 |
Ending balance at December 31, 2017 |  | $ | 24.7 |
Estimated future benefit payments | The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:
|  | Pension Benefits |  |  | Other Benefits |
|  | (millions of dollars) |
2018 |  | $ | 22.9 |  |  | $ | 0.5 |
2019 |  | $ | 24.3 |  |  | $ | 0.5 |
2020 |  | $ | 25.5 |  |  | $ | 0.5 |
2021 |  | $ | 25.4 |  |  | $ | 0.5 |
2022 |  | $ | 26.2 |  |  | $ | 0.5 |
2023-2026 |  | $ | 131.6 |  |  | $ | 2.7 |

X
- Definition Tabular disclosure of the amounts that are recognized in accumulated other comprehensive income ("AOCI") for pension plans and/or other employee benefit plans, showing separately the components of AOCI including net actuarial gain (loss) and prior service cost. + References No definition available. + Details
Name: | mtx_AmountsRecognizedInAccumulatedOtherComprehensiveIncomeTableTextBlock
Namespace Prefix: | mtx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the fair value of plan assets by geographic location (e.g., U.S. plans, international plans). + References No definition available. + Details
Name: | mtx_FairValueOfPlanAssetsByGeographicLocationTableTextBlock
Namespace Prefix: | mtx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of accumulated benefit obligations and fair values of plan assets of pension plans and/or other employee benefit plans where the accumulated benefit obligation exceeds the fair value of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 + Details
Name: | us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income (loss) expected to be recognized as components of net periodic benefit cost over the next fiscal year, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAssumptionsUsedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2439-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2410-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=77993564&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the effect of fair value measurements using significant unobservable inputs (Level 3) on changes in plan assets of pension plans and/or other employee benefit plans for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration