Subsequent Event (Details) (Subsequent event, USD $) In Millions, unless otherwise specified		0 Months Ended
Apr. 12, 2013 Metals USA	Apr. 30, 2013 Real estate holding company item
Subsequent Events
Total transaction value	$ 1,250.0	$ 75.6
Number of real estate properties of acquired entity which were leased by subsidiaries of our entity		18
Value of debt assumed	$ 12.3	$ 40.5

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant