XML 19 R57.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Employee Benefit Plans (Schedule of Allocation of Plan Assets) (Details) | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Pension Benefit Plan [Member] |  |
Allocation of plan assets | 100.00% | 100.00%
Pension Benefit Plan [Member] | Commodities [Member] |  |
Allocation of plan assets | 1.50% | 2.40%
Target plan allocations | 5.00% |
Pension Benefit Plan [Member] | Cash [Member] |  |
Allocation of plan assets | 0.50% | 1.60%
Target plan allocations | 2.00% |
Pension Benefit Plan [Member] | Debt Securities [Member] |  |
Allocation of plan assets | 36.50% | 36.50%
Target plan allocations | 38.00% |
Pension Benefit Plan [Member] | Equity Securities [Member] |  |
Allocation of plan assets | 61.50% | 59.50%
Target plan allocations | 55.00% |
Other Benefits Plan [Member] |  |
Allocation of plan assets | 100.00% | 100.00%
Other Benefits Plan [Member] | Commodities [Member] |  |
Allocation of plan assets | 0.00% | 0.00%
Other Benefits Plan [Member] | Cash [Member] |  |
Allocation of plan assets | 7.00% | 8.00%
Other Benefits Plan [Member] | Debt Securities [Member] |  |
Allocation of plan assets | 33.00% | 37.30%
Other Benefits Plan [Member] | Equity Securities [Member] |  |
Allocation of plan assets | 60.00% | 54.70%
Target plan allocations | 43.00% |

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=118257860&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=118255775&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=118255775&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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_ExchangeTradedFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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