Condensed Consolidating Statements of Cash Flows (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Cash flows used by Parent	$ 125

Cash Flow Impact Of Change In Parent Company Investment

No definition available.

Name:	lo_CashFlowImpactOfChangeInParentCompanyInvestment
Namespace Prefix:	lo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration