Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Redemption, Minimum Time Period Between Redemptions

+ References

No definition available.

+ Details

Name:	lby_DebtInstrumentRedemptionMinimumTimePeriodBetweenRedemptions
Namespace Prefix:	lby_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Derivative, Call Price, Percent of Principal

+ References

No definition available.

+ Details

Name:	lby_DerivativeCallPricePercentOfPrincipal
Namespace Prefix:	lby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Derivative, Portion Callable by Counterparty, Percent

+ References

No definition available.

+ Details

Name:	lby_DerivativePortionCallableByCounterpartyPercent
Namespace Prefix:	lby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Gain (Loss) on Carrying Value Adjustment on Debt related to Interest Rate Swap

+ References

No definition available.

+ Details

Name:	lby_GainLossOnCarryingValueAdjustmentOnDebtRelatedToInterestRateSwap
Namespace Prefix:	lby_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeVariableInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 14

-Footnote 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_ProceedsFromHedgeFinancingActivities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Borrowings (Interest Rate Swap Narrative) (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended					3 Months Ended
	Jun. 30, 2013 Subsidiary, Libbey Glass [Member] Senior Notes [Member]	Jun. 29, 2012 Subsidiary, Libbey Glass [Member] Senior Notes [Member]	Jun. 30, 2013 Fair Value Hedging [Member] Interest rate agreements [Member] Prior to May 15, 2015 [Member] Subsidiary, Libbey Glass [Member] Senior Notes [Member]	Jun. 30, 2012 Fair Value Hedging [Member] Old Rate Agreement [Member] Interest rate agreements [Member]	Apr. 18, 2012 Fair Value Hedging [Member] Old Rate Agreement [Member] Interest rate agreements [Member] Senior Notes [Member]	Apr. 17, 2012 Fair Value Hedging [Member] Old Rate Agreement [Member] Interest rate agreements [Member] Senior Notes [Member]	Jun. 30, 2013 Fair Value Hedging [Member] New Rate Agreement [Member] Interest rate agreements [Member] Senior Notes [Member]	Jun. 30, 2013 Fair Value Hedging [Member] New Rate Agreement [Member] Interest rate agreements [Member] Prior to May 15, 2015 [Member] Senior Notes [Member]	Jun. 30, 2012 Fair Value Hedging [Member] Interest Expense [Member] Old Rate Agreement [Member] Interest rate agreements [Member]	Jun. 30, 2012 Designated as Hedging Instrument [Member] Fair Value Hedging [Member] Loss on Redemption of Debt [Member] Old Rate Agreement [Member] Interest rate agreements [Member]
Debt Instrument [Line Items]
Derivative, notional amount						$ 80.0	$ 45.0
Derivative, variable interest rate					7.79%		5.50%
Interest rate	6.875%	10.00%
Proceeds from termination of hedge				3.6
Gain (loss) on carrying value adjustment on debt related to interest rate swap									$ 0.1	$ 3.5
Minimum time period between redemptions			12 months
Portion of derivative callable by counterparty, %								10.00%
Call price of derivative, % of principal								103.00%