SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended		12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011 item	Dec. 31, 2012 item	Jun. 29, 2012
Description of Business
Number of vessels owned			17
Separation costs			$ 8.6
SSAT | Ocean Transportation
Description of Business
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
Alexander & Baldwin
Description of Business
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 contribution to A&B			155.7
Separation costs			8.6
Capitalized debt financing costs			1.9
Total cash outflow related to the Separation			$ 166.2
Number of cash outflow components			3