2.2.0.7 false Credit Agreement [Details] (USD $) 0607 - Disclosure - Credit Agreement [Details] true false In Millions false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ 3 Credit Agreement (Textuals) 1 lo_CreditAgreementTextualsAbstract lo false na duration Credit Agreement Textuals Abstract. 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 xbrli:stringItemType string Credit Agreement Textuals Abstract. false 4 Revolving Credit Facility 2 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity us-gaap true credit 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 true true false false 185000000 185 false false false xbrli:monetaryItemType monetary Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 false 5 Revolving Credit Facility, Initiation Date 2 us-gaap_LineOfCreditFacilityInitiationDate us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 2010-03-26 2010-03-26 false false false 2 false false false false 0 0 false false false us-types:dateStringItemType normalizedstring Reflects when the credit facility first became available, which may be presented in a variety of ways (year, month and year, day, month and year, quarter). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 false 6 Revolving Credit Facility, Expiration Date 2 us-gaap_LineOfCreditFacilityExpirationDate us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 2013-03-26 2013-03-26 false false false 2 false false false false 0 0 false false false us-types:dateStringItemType normalizedstring Reflects when the credit facility terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 false 7 Ratio of Debt to EBITDA to be maintained as per Revolver requirement 2 lo_RatioOfDebtToEbitda lo false na duration Ratio Of Debt to Ebitda. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 not more than 2.25 to 1 not more than 2.25 to 1 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Ratio Of Debt to Ebitda. No authoritative reference available. false 8 Ratio of EBITDA to interest expense to be maintained as per Revolver requirement 2 lo_RatioOfEbitdaToInterestExpense lo false na duration Ratio of EBITDA to interest expense. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 not less than 3.0 to 1 not less than 3.0 to 1 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Ratio of EBITDA to interest expense. No authoritative reference available. false 9 Borrowings under the facility 2 us-gaap_LinesOfCreditCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 true true false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:monetaryItemType monetary The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20 -Article 5 false 2 7 false Millions UnKnown UnKnown false true