The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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-Name Regulation S-X (SX)

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The fair value of notes assumed in noncash investing or financing activities.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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Financing Receivable Maturity Date

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When presenting a range of either fixed or variable rates of interest that are charged to borrowers on the carrying amount of loans, the highest stated (contractual) rate under the agreement as of the balance sheet date.

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Notes Receivable From Real Estate Joint Ventures And Partnerships (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014 Contract	Dec. 31, 2013	Dec. 31, 2012	Dec. 23, 2013
Receivables [Abstract]
Number of outstanding notes receivable		0
Interest rate on notes receivable - range minimum			2.90%
Interest rate on notes receivable - range maximum			5.70%
Notes due through various dates			Jun. 30, 2017
Write-off of uncollectible notes receivable		$ 0us-gaap_ProvisionForDoubtfulAccounts
Interest income on notes receivable		0.1us-gaap_InvestmentIncomeInterest	2.2us-gaap_InvestmentIncomeInterest	3.0us-gaap_InvestmentIncomeInterest
Ownership percentage in joint ventures	50.00%		50.00%		50.00%
Notes receivable settlement	$ 54.8us-gaap_NotesAssumed1