XML 80 R42.htm IDEA: XBRL DOCUMENT
v3.20.2

Benefit Plans (Tables) | 12 Months Ended
--- | ---
Aug. 31, 2020
Retirement Benefits [Abstract] |
Schedule of defined benefit plans disclosures | Financial information on changes in projected benefit obligation, plan assets funded and balance sheet status as of August 31, 2020 and 2019, is as follows:
| Qualified Pension Benefits |  | Nonqualified Pension Benefits |  | Other Benefits
| 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
| (Dollars in thousands)
Change in benefit obligation: |  |  |  |  |  |  |  |  |  |  |
Projected benefit obligation at beginning of period | $ | 876,696 |  |  | $ | 767,184 |  |  | $ | 19,047 |  |  | $ | 20,755 |  |  | $ | 31,098 |  |  | $ | 29,790 |
Service cost | 42,151 |  |  | 38,592 |  |  | 405 |  |  | 311 |  |  | 1,050 |  |  | 1,053 |
Interest cost | 21,722 |  |  | 28,396 |  |  | 429 |  |  | 747 |  |  | 747 |  |  | 1,094 |
Actuarial loss (gain) | 6,265 |  |  | (9,606) |  |  | 1,382 |  |  | 76 |  |  | (2,286) |  |  | (2,596) |
Assumption change | 40,694 |  |  | 102,441 |  |  | 775 |  |  | 1,841 |  |  | 1,275 |  |  | 3,398 |
Plan amendments | — |  |  | 18 |  |  | — |  |  | — |  |  | — |  |  | — |
Settlements | — |  |  | (615) |  |  | (2,130) |  |  | (3,975) |  |  | — |  |  | — |
Benefits paid | (69,526) |  |  | (49,714) |  |  | (725) |  |  | (708) |  |  | (1,568) |  |  | (1,641) |
Projected benefit obligation at end of period | $ | 918,002 |  |  | $ | 876,696 |  |  | $ | 19,183 |  |  | $ | 19,047 |  |  | $ | 30,316 |  |  | $ | 31,098 |
Change in plan assets: |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of period | $ | 909,427 |  |  | $ | 829,616 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Actual gain on plan assets | 90,241 |  |  | 90,139 |  |  | — |  |  | — |  |  | — |  |  | — |
Company contributions | 46,400 |  |  | 40,001 |  |  | 2,855 |  |  | 4,683 |  |  | 1,568 |  |  | 1,641 |
Settlements | — |  |  | (615) |  |  | (2,130) |  |  | (3,975) |  |  | — |  |  | — |
Benefits paid | (69,526) |  |  | (49,714) |  |  | (725) |  |  | (708) |  |  | (1,568) |  |  | (1,641) |
Fair value of plan assets at end of period | $ | 976,542 |  |  | $ | 909,427 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Funded status at end of period | $ | 58,540 |  |  | $ | 32,731 |  |  | $ | (19,183) |  |  | $ | (19,047) |  |  | $ | (30,316) |  |  | $ | (31,098) |
Amounts recognized on balance sheet: |  |  |  |  |  |  |  |  |  |  |
Noncurrent assets | $ | 58,540 |  |  | $ | 32,731 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Accrued benefit cost: |  |  |  |  |  |  |  |  |  |  |
Current liabilities | — |  |  | — |  |  | (1,660) |  |  | (1,580) |  |  | (2,090) |  |  | (2,040) |
Noncurrent liabilities | — |  |  | — |  |  | (17,523) |  |  | (17,467) |  |  | (28,226) |  |  | (29,058) |
Ending balance | $ | 58,540 |  |  | $ | 32,731 |  |  | $ | (19,183) |  |  | $ | (19,047) |  |  | $ | (30,316) |  |  | $ | (31,098) |
Amounts recognized in accumulated other comprehensive loss (pretax): |  |  |  |  |  |  |  |  |  |  |
Prior service cost (credit) | $ | 938 |  |  | $ | 1,117 |  |  | $ | (502) |  |  | $ | (616) |  |  | $ | (2,715) |  |  | $ | (3,160) |
Net loss (gain) | 225,983 |  |  | 244,164 |  |  | 3,813 |  |  | 2,151 |  |  | (15,064) |  |  | (15,445) |
Ending balance | $ | 226,921 |  |  | $ | 245,281 |  |  | $ | 3,311 |  |  | $ | 1,535 |  |  | $ | (17,779) |  |  | $ | (18,605) |
Schedule of information for pensions plans with an accumulated benefit obligation in excess of plan assets | Information for the pension plans with an accumulated benefit obligation in excess of plan assets is set forth below:
| Years Ended August 31,
| 2020 |  | 2019
| (Dollars in thousands)
Projected benefit obligation | $ | 19,183 |  |  | $ | 19,047 |
Accumulated benefit obligation | 18,172 |  |  | 16,907 |
Schedule of net benefit costs of assumptions used | Components of net periodic benefit costs for the years ended August 31, 2020, 2019 and 2018, are as follows:
| Qualified Pension Benefits |  | Nonqualified Pension Benefits |  | Other Benefits
| 2020 |  | 2019 |  | 2018 |  | 2020 |  | 2019 |  | 2018 |  | 2020 |  | 2019 |  | 2018
| (Dollars in thousands)
Components of net periodic benefit costs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | 42,151 |  |  | $ | 38,592 |  |  | $ | 39,677 |  |  | $ | 405 |  |  | $ | 311 |  |  | $ | 548 |  |  | $ | 1,050 |  |  | $ | 1,053 |  |  | $ | 943 |
Interest cost | 21,722 |  |  | 28,396 |  |  | 24,007 |  |  | 429 |  |  | 747 |  |  | 711 |  |  | 747 |  |  | 1,094 |  |  | 908 |
Expected return on assets | (46,684) |  |  | (44,968) |  |  | (48,159) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Settlement of retiree obligations | — |  |  | 51 |  |  | — |  |  | — |  |  | 191 |  |  | (112) |  |  | — |  |  | — |  |  | — |
Prior service cost (credit) amortization | 178 |  |  | 190 |  |  | 1,437 |  |  | (114) |  |  | (75) |  |  | 30 |  |  | (445) |  |  | (556) |  |  | (565) |
Actuarial loss (gain) amortization | 21,583 |  |  | 12,348 |  |  | 18,073 |  |  | 98 |  |  | 2 |  |  | 61 |  |  | (1,392) |  |  | (1,627) |  |  | (1,224) |
Net periodic benefit cost (benefit) | $ | 38,950 |  |  | $ | 34,609 |  |  | $ | 35,035 |  |  | $ | 818 |  |  | $ | 1,176 |  |  | $ | 1,238 |  |  | $ | (40) |  |  | $ | (36) |  |  | $ | 62 |
Weighted-average assumptions to determine the net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | 3.06 | % |  | 4.23 | % |  | 3.80 | % |  | 2.70 | % |  | 4.09 | % |  | 3.53 | % |  | 2.89 | % |  | 4.08 | % |  | 3.56 | %
Expected return on plan assets | 5.50 | % |  | 5.50 | % |  | 5.75 | % |  | N/A |  | N/A |  | N/A |  | N/A |  | N/A |  | N/A
Rate of compensation increase | 5.28 | % |  | 5.14 | % |  | 5.08 | % |  | 5.28 | % |  | 5.14 | % |  | 5.08 | % |  | N/A |  | N/A |  | N/A
Weighted-average assumptions to determine the benefit obligations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | 2.67 | % |  | 3.06 | % |  | 4.23 | % |  | 2.15 | % |  | 2.70 | % |  | 4.09 | % |  | 2.43 | % |  | 2.89 | % |  | 4.13 | %
Rate of compensation increase | 4.99 | % |  | 5.28 | % |  | 5.14 | % |  | 4.99 | % |  | 5.28 | % |  | 5.14 | % |  | N/A |  | N/A |  | N/A
Schedule of components of net periodic benefit costs and amounts recognized in other comprehensive income (loss) | Components of net periodic benefit costs and amounts recognized in other comprehensive loss (income) for the years ended August 31, 2020, 2019 and 2018, are as follows:
| Qualified Pension Benefits |  | Nonqualified Pension Benefits |  | Other Benefits
| 2020 |  | 2019 |  | 2018 |  | 2020 |  | 2019 |  | 2018 |  | 2020 |  | 2019 |  | 2018
| (Dollars in thousands)
Other comprehensive loss (income): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service cost | $ | — |  |  | $ | 18 |  |  | $ | 244 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Net actuarial loss (gain) | 3,401 |  |  | 47,556 |  |  | (8,553) |  |  | 2,157 |  |  | 1,917 |  |  | (578) |  |  | (1,011) |  |  | 801 |  |  | (2,234) |
Amortization of actuarial (gain) loss | (21,583) |  |  | (12,307) |  |  | (18,073) |  |  | (98) |  |  | (2) |  |  | (61) |  |  | 1,392 |  |  | 1,627 |  |  | 1,224 |
Amortization of prior service (credit) costs | (178) |  |  | (190) |  |  | (1,437) |  |  | 114 |  |  | 75 |  |  | (30) |  |  | 445 |  |  | 556 |  |  | 565 |
Settlement of retiree obligations (a) | — |  |  | — |  |  | — |  |  | (397) |  |  | (191) |  |  | 112 |  |  | — |  |  | — |  |  | — |
Total recognized in other comprehensive loss (income) | $ | (18,360) |  |  | $ | 35,077 |  |  | $ | (27,819) |  |  | $ | 1,776 |  |  | $ | 1,799 |  |  | $ | (557) |  |  | $ | 826 |  |  | $ | 2,984 |  |  | $ | (445) |
(a) Reflects amounts reclassified from accumulated other comprehensive loss (income) to net earnings
Schedule of amounts in accumulated other comprehensive income (loss) to be recognized over next fiscal year | stimated amortization in fiscal 2021 from accumulated other comprehensive loss into net periodic benefit cost is as follows:
| Qualified Pension Benefits |  | Nonqualified Pension Benefits |  | Other Benefits
| (Dollars in thousands)
Amortization of prior service cost (credit) | $ | 178 |  |  | $ | (114) |  |  | $ | (445) |
Amortization of actuarial loss (gain) | 21,790 |  |  | 212 |  |  | (1,365) |
Schedule of effect of one-percentage-point change in assumed health care cost trend rates | A one-percentage-point change in the assumed health care cost trend rates would have the following effects:
| 1% Increase |  | 1% Decrease
| (Dollars in thousands)
Effect on total of service and interest cost components | $ | 200 |  |  | $ | (170) |
Effect on postretirement benefit obligation | 2,100 |  |  | (1,800) |
Schedule of expected benefit payments | Our retiree benefit payments, which reflect expected future service, are anticipated to be paid as follows:
| Qualified Pension Benefits |  | Nonqualified Pension Benefits |  | Other Benefits |  |
| (Dollars in thousands)
2021 | $ | 75,700 |  |  | $ | 1,660 |  |  | $ | 2,090 |  |  |
2022 | 65,900 |  |  | 1,840 |  |  | 2,280 |  |  |
2023 | 63,500 |  |  | 1,840 |  |  | 2,470 |  |  |
2024 | 64,700 |  |  | 1,620 |  |  | 2,450 |  |  |
2025 | 65,300 |  |  | 1,820 |  |  | 2,450 |  |  |
2026-2030 | 326,700 |  |  | 8,010 |  |  | 9,790 |  |  |
Schedule of defined benefit plans, fair value disclosure | Our pension plans' recurring fair value measurements by asset category at August 31, 2020 and 2019, are presented in the tables below:
| 2020
| Level 1 |  | Level 2 |  | Level 3 |  | Total
| (Dollars in thousands)
Cash and cash equivalents | $ | 57,801 |  |  | $ | — |  |  | $ | — |  |  | $ | 57,801 |
Equities: |  |  |  |  |  |  |
Common/collective trust at net asset value (1) | — |  |  | — |  |  | — |  |  | 219,050 |
Fixed income securities: |  |  |  |  |  |  |
Common/collective trust at net asset value (1) | — |  |  | — |  |  | — |  |  | 603,250 |
Partnership and joint venture interests measured at net asset value (1) | — |  |  | — |  |  | — |  |  | 94,400 |
Other assets measured at net asset value (1) | — |  |  | — |  |  | — |  |  | 2,041 |
Total | $ | 57,801 |  |  | $ | — |  |  | $ | — |  |  | $ | 976,542 |
| 2019
| Level 1 |  | Level 2 |  | Level 3 |  | Total
| (Dollars in thousands)
Cash and cash equivalents | $ | 7,938 |  |  | $ | — |  |  | $ | — |  |  | $ | 7,938 |
Equities: |  |  |  |  |  |  |
Common/collective trust at net asset value (1) | — |  |  | — |  |  | — |  |  | 209,860 |
Fixed income securities: |  |  |  |  |  |  |
Common/collective trust at net asset value (1) | — |  |  | — |  |  | — |  |  | 574,296 |
Partnership and joint venture interests measured at net asset value (1) | — |  |  | — |  |  | — |  |  | 101,641 |
Other assets measured at net asset value (1) | — |  |  | — |  |  | — |  |  | 15,692 |
Total | $ | 7,938 |  |  | $ | — |  |  | $ | — |  |  | $ | 909,427 |
(1) In accordance with ASC Topic 820-10, Fair Value Measurement, certain assets that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in the tables above are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of net assets.
Schedule of multiemployer plans | Our participation in the Co-op Plan for the years ended August 31, 2020, 2019 and 2018, is outlined in the table below:
|  |  |  | Contributions of CHS |  |  |  |
|  |  |  | (Dollars in thousands) |  |  |  |
Plan Name |  | EIN/Plan Number |  | 2020 |  | 2019 |  | 2018 |  | Surcharge Imposed |  | Expiration Date of Collective Bargaining Agreement
Co-op Retirement Plan |  | 01-0689331 / 001 |  | $ | 1,455 |  |  | $ | 1,712 |  |  | $ | 1,662 |  |  | N/A |  | N/A

X
- Definition Schedule of Defined Benefit Plans, Fair Value Disclosure [Table Text Block] + References No definition available. + Details
Name: | chscp_ScheduleOfDefinedBenefitPlansFairValueDisclosureTableTextBlock
Namespace Prefix: | chscp_
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 benefit obligation and plan assets of defined benefit plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -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 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 + 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 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://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=118255775&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 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=118255775&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 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://fasb.org/us-gaap/role/ref/legacyRef -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 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2439-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2410-114920 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920 + 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 a one-percentage-point increase and the effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs and the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=118255775&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 information about multiemployer plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 5: 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 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 9: 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 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
Name: | us-gaap_ScheduleOfMultiemployerPlansTableTextBlock
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration