Other Current Liabilities (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Interest Rate Cash Flow Hedge Liability at Fair Value	$ 15,200,000	$ 11,700,000
Insurance proceeds for claims submitted to cover cost	10,000,000
Clover Capital Acquisition [Member]
Business acquisition contingent consideration accrued liability	5,900,000	0
Sun Trust Acquisition [Member]
Fair value of future consideration payments liability, current	$ 4,000,000	$ 5,300,000

Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant