XML 86 R71.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Pension and Postretirement Health and Life Benefits Pension and Postretirement Health and Life Benefits (Plan Asset Allocations) (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014
Pension Plan, Defined Benefit [Member] |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 100.00% | 100.00%
Pension Plan, Defined Benefit [Member] | Equity Securities [Member] |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 47.00% | 48.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 40.00% |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 60.00% |
Pension Plan, Defined Benefit [Member] | Debt Securities [Member] |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 53.00% | 52.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 40.00% |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 60.00% |
Other Postretirement Benefit Plan, Defined Benefit [Member] |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 100.00% | 100.00%
Other Postretirement Benefit Plan, Defined Benefit [Member] | Equity Securities [Member] |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 64.00% | 65.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 55.00% |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 75.00% |
Other Postretirement Benefit Plan, Defined Benefit [Member] | Debt Securities [Member] |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 36.00% | 35.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 25.00% |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 45.00% |

X
- Definition Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis. + 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)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=58740216&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_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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