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Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Related Party Transactions |  |  |  |
Distribution upon Separation |  |  | $ (151.4) |
Net distribution in relation to separation | 4.3 |  |  |
Contributions received |  |  | 26.7 | 16.3
A&B |  |  |  |
Related Party Transactions |  |  |  |
Vessel management services income | 1.1 | 1.0 | 2.0 | 1.9
Lease expense to affiliate | (1.0) | (1.2) | (2.1) | (2.1)
Equipment and repair services expense and other | (0.9) | (0.6) | (1.4) | (1.2)
Related party expense, net | (0.8) | (0.8) | (1.5) | (1.4)
Distribution upon Separation |  |  | 151.4 |
Net distribution in relation to separation | 4.3 |  |  |
Proceeds from and distributions to A&B from issuance of capital stock |  |  | 21.7 |
Contributions received |  |  | $ 26.7 | $ 16.3

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- Definition Represents final net distribution expected to be incurred in relation to settlement of liabilities of former parent entity. + References No definition available. + Details
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- Definition Total cash outflows in relation to the separation from the Former Parent Company during the reporting period. + References No definition available. + Details
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- Definition This element represents equipment expense including depreciation, repairs, rentals, and service contract costs. This item also includes equipment purchases which do not qualify for capitalization in accordance with the entity's accounting policy. This item may also include furniture expenses. + References No definition available. + Details
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- Definition Revenues arising from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's' management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Related Parties -URI http://asc.fasb.org/extlink&oid=6523133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 2 -Subparagraph c -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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 1 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 07 -Paragraph b -Subparagraph 1 -Article 6 + Details
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