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Description of Business: (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended |  | 1 Months Ended | 9 Months Ended |  |
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Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Sep. 30, 2012 item | Sep. 30, 2012 SSAT | Jun. 30, 2012 Alexander & Baldwin | Dec. 31, 2011 Alexander & Baldwin item | Sep. 30, 2012 Alexander & Baldwin item | Dec. 31, 2012 Alexander & Baldwin | Jun. 29, 2012 Alexander & Baldwin
Description of Business |  |  |  |  |  |  |  |  |  |
Number of vessels owned |  |  |  | 17 |  |  |  |  |  |
Ownership interest in SSAT (as a percent) |  |  |  |  | 35.00% |  |  |  |  |
Number of terminal facilities on which SSAT provides terminal and stevedoring services to Matnav and numerous international carriers |  |  |  | 6 |  |  |  |  |  |
Number of publicly traded companies to be created after separation |  |  |  |  |  |  | 2 |  |  |
Jones Act requirement to maintain status as U.S. citizen, maximum ownership interest permitted by non-U.S. citizens (as a percent) |  |  |  |  |  |  |  | 22.00% |  |
Number of shares of common stock of A&B received for each share upon separation |  |  |  |  |  |  |  |  |  | 1
Maximum period during which services are to be provided under Transition Services Agreement |  |  |  |  |  | 24 months |  |  |  |
Capital distribution to A&B |  |  |  |  |  |  |  | $ 155.7 |  |
Separation costs | 0.3 | 5.8 | 2.5 | 8.6 |  |  |  | 8.6 |  |
Capitalized debt financing costs |  |  |  |  |  |  |  | 1.9 |  |
Total cash outflow related to the Separation |  |  |  |  |  |  |  | 166.2 |  |
Number of cash outflow components |  |  |  |  |  |  |  | 3 |  |
Net distribution in relation to separation | $ 4.3 |  |  | $ 4.3 |  |  |  | $ 3.6 | $ 0.7 |

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- Definition Represents the maximum permitted ownership percentage by non-U.S. citizens in order to maintain the entity's status as a U.S. citizen under certain U.S. maritime and vessel documentation laws, popularly referred to as the Jones Act. + References No definition available. + Details
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- Definition Represents the number of companies to be created after separation for which the board of directors unanimously approved a plan to pursue the separation. + References No definition available. + Details
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- Definition Represents the number of shares of common stock received for each share upon separation by the holders of the reporting entity. + References No definition available. + Details
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- Definition Represents the number of ports terminal facilities on which the investee provides terminal and stevedoring services. + References No definition available. + Details
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