XML 47 R56.htm IDEA: XBRL DOCUMENT v2.4.1.9
Benefit Plans and Other Postretirement Benefits, Changes in Level 3 Pension Plan Assets (Details) (Pension Plans, USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 $ 402,269us-gaap_DefinedBenefitPlanFairValueOfPlanAssets $ 393,393us-gaap_DefinedBenefitPlanFairValueOfPlanAssets $ 376,138us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1 23,977us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses) 3,532us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses) (2,113)us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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Purchases, issuances and settlements, net (376)us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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Transfers in (out) of Level 3 0us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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Fair value of plan assets at Dec. 31 25,020us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Asset-backed securities
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 494us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
Asset-backed securities | Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1   1,755us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses)   0us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses)   0us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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Purchases, issuances and settlements, net   0us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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Transfers in (out) of Level 3   (1,755)us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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Fair value of plan assets at Dec. 31 0us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Mortgage-backed securities
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 1,451us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Mortgage-backed securities | Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1   4,331us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses)   0us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses)   0us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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Purchases, issuances and settlements, net   0us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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Transfers in (out) of Level 3   (4,331)us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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Fair value of plan assets at Dec. 31 0us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Private equity investments
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 18,331us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Private equity investments | Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1 18,222us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses) 3,101us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses) (1,894)us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 (2,296)us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Purchases, issuances and settlements, net (1,098)us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 (402)us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 1,300us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Transfers in (out) of Level 3 0us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 0us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [1] 0us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Fair value of plan assets at Dec. 31 18,331us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 18,222us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 17,049us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_PrivateEquityFundsMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Real estate
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 6,689us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember		 5,755us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember		 6,969us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
Real estate | Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1 5,755us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 6,969us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 3,586us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Net realized gains (losses) 431us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
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/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 2us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Net unrealized gains (losses) (219)us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Purchases, issuances and settlements, net 722us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 1,128us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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= us-gaap_RealEstateMember
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 2,830us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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= us-gaap_RealEstateMember
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= us-gaap_FairValueInputsLevel3Member
Transfers in (out) of Level 3 0us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
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= us-gaap_FairValueInputsLevel3Member		 (3,495)us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [1] 0us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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= us-gaap_RealEstateMember
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Fair value of plan assets at Dec. 31 $ 6,689us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 $ 5,755us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 $ 6,969us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_RealEstateMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
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= us-gaap_FairValueInputsLevel3Member
[1] Transfers out of Level 3 into Level 2 were principally due to diminished use of unobservable inputs that were previously significant to these fair value measurements and were subsequently sold during 2013.