Basis of Presentation (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011
Basis of Presentation [Abstract]
Contribution from Alexander & Baldwin Holdings, Inc.-net	$ 156.4	[1]	$ (30.7)

[1] Refer to Note 11, “Related Party Transactions.”