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Financial Instruments - Information Regarding Swaps (Detail) (USD $) In Millions, unless otherwise specified | 9 Months Ended |
--- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013
Derivative [Line Items] |  |
Aggregate Notional Amount of Interest Rate Derivatives | $ 530.4 | $ 631.4
Other Assets [Member] |  |
Derivative [Line Items] |  |
Asset | 1.6 | 2.8
Accounts Payable [Member] |  |
Derivative [Line Items] |  |
Liability | (4.3) | (6.0)
Interest Rate Swaps One [Member] |  |
Derivative [Line Items] |  |
Maturity Date | Jun. 28, 2014 |
Counterparty Pays Variable Rate | 1 Month LIBOR |
Fixed Rate | 1.00% |
Asset |  | 0
Liability |  | (0.4)
Interest Rate Swaps Two [Member] |  |
Derivative [Line Items] |  |
Maturity Date | Jun. 01, 2015 |
Aggregate Notional Amount of Interest Rate Derivatives | 50.0 |
Counterparty Pays Variable Rate | 1 Month LIBOR |
Fixed Rate | 0.60% |
Asset | 0 | 0
Liability | (0.1) | (0.2)
Interest Rate Swaps Three [Member] |  |
Derivative [Line Items] |  |
Maturity Date | Jul. 01, 2015 |
Aggregate Notional Amount of Interest Rate Derivatives | 100.0 |
Counterparty Pays Variable Rate | 1 Month LIBOR |
Fixed Rate | 0.50% |
Asset | 0 | 0
Liability | (0.3) | (0.4)
Interest Rate Swaps Four [Member] |  |
Derivative [Line Items] |  |
Maturity Date | Sep. 01, 2017 |
Aggregate Notional Amount of Interest Rate Derivatives | 80.4 |
Counterparty Pays Variable Rate | 1 Month LIBOR |
Fixed Rate | 2.80% |
Asset | 0 | 0
Liability | (3.9) | (5.0)
Interest Rate Swaps Five [Member] |  |
Derivative [Line Items] |  |
Maturity Date | Jan. 02, 2018 |
Aggregate Notional Amount of Interest Rate Derivatives | 100.0 |
Counterparty Pays Variable Rate | 1 Month LIBOR |
Fixed Rate | 0.90% |
Asset | 1.2 | 1.4
Liability | 0 | 0
Interest Rate Swaps Six [Member] |  |
Derivative [Line Items] |  |
Maturity Date | Feb. 01, 2019 |
Aggregate Notional Amount of Interest Rate Derivatives | 100.0 |
Counterparty Pays Variable Rate | 1 Month LIBOR |
Fixed Rate | 1.60% |
Asset | 0 | 0.5
Liability | 0 | 0
Interest Rate Swaps Seven [Member] |  |
Derivative [Line Items] |  |
Maturity Date | Feb. 01, 2019 |
Aggregate Notional Amount of Interest Rate Derivatives | 100.0 |
Counterparty Pays Variable Rate | 1 Month LIBOR |
Fixed Rate | 1.50% |
Asset | 0.4 | 0.9
Liability | $ 0 | $ 0

X
- Definition The reference rate for the variable rate of the interest rate derivative, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References 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
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 + Details
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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