XML 114 R93.htm IDEA: XBRL DOCUMENT
v3.10.0.1

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Target Allocation and Actual Asset Allocations for Pension and VEBA Plan Assets) (Details) | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Pension Benefits [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 100.00% | 100.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 100.00% |
Pension Benefits [Member] | Equity Securities [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 38.90% | 43.60%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 45.00% |
Pension Benefits [Member] | Fixed Income Investments [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 26.00% | 27.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 28.00% |
Pension Benefits [Member] | Hedge Funds [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 5.40% | 5.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 5.00% |
Pension Benefits [Member] | Private Equity Funds [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 6.20% | 5.30%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 7.00% |
Pension Benefits [Member] | Structured Finance [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 11.40% | 9.70%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 7.50% |
Pension Benefits [Member] | Real Estate [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 10.30% | 8.70%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 7.50% |
Pension Benefits [Member] | Cash [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 1.80% | 0.70%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 0.00% |
Other Benefits [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 100.00% | 100.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 100.00% |
Other Benefits [Member] | Equity Securities [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 8.10% | 8.70%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 8.00% |
Other Benefits [Member] | Fixed Income Investments [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 77.00% | 77.70%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 80.00% |
Other Benefits [Member] | Hedge Funds [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 4.70% | 4.40%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 4.00% |
Other Benefits [Member] | Private Equity Funds [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 1.20% | 1.50%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 3.00% |
Other Benefits [Member] | Structured Finance [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 3.50% | 3.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 2.00% |
Other Benefits [Member] | Real Estate [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 5.40% | 4.60%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 3.00% |
Other Benefits [Member] | Cash [Member] |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Weighted-average asset allocation | 0.10% | 0.10%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 0.00% |

X
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: 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=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_HedgeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_PrivateEquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_StructuredFinanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |