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Notional amount refers to the monetary amount specified in the interest rate derivative contract. No authoritative reference available. false 4 Fixed interest rate under interest rate swap agreement 2 us-gaap_DerivativeFixedInterestRate us-gaap true na instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false true false false 0.08125 0.08125 false false false us-types:percentItemType pure Fixed interest rate related to the interest rate derivative. No authoritative reference available. false 5 Spread on variable rate based on one month LIBOR 2 us-gaap_DerivativeBasisSpreadOnVariableRate us-gaap true na instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false true false false 0.04625 0.04625 false false false us-types:percentItemType pure The percentage points added to the reference rate to compute the variable rate on the interest rate derivative. No authoritative reference available. false 6 Variable interest rate 2 us-gaap_DerivativeVariableInterestRate us-gaap true na instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0.04881 0.04881 false false false 2 false true false false 0.04881 0.04881 false false false 3 false true false false 0.04856 0.04856 false false false 4 false false false false 0 0 false false false us-types:percentItemType pure Variable interest rate in effect as of the balance sheet date related to the interest rate derivative. No authoritative reference available. false 7 Reduction in interest expense 2 lo_FairValueHedgeGainLossReclassifiedToInterestExpenseNet lo false credit duration Fair Value Hedge Gain Loss Reclassified To Interest Expense Net. false false false false false false false false false false false verboselabel false 1 false true false false 6000000 6 false false false 2 false true false false 18000000 18 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value Hedge Gain Loss Reclassified To Interest Expense Net. No authoritative reference available. false 10 Derivatives, Fair Value [Line Items] 2 us-gaap_DerivativesFairValueLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string 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. false 11 Fair value of the interest rate swaps 2 us-gaap_DerivativeFairValueOfDerivativeAsset us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 66000000 66 false false false 2 false true false false 66000000 66 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. 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No authoritative reference available. false 20 Derivative Instruments (Textuals) [Abstract] 2 us-gaap_DebtInstrumentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string 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. false 21 Adjusted carrying amounts of the hedged debt outstanding 2 us-gaap_SeniorLongTermNotes us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 816000000 816 false false false 2 false false false false 0 0 false false false 3 false true false false 722000000 722 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders. 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