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Significant Accounting Policies Notes Receivable (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Notes Receivable [Abstract]
Notes, loans and financing receivables, gross, Total	$ 77,000,000		$ 81,000,000
Allowance for Notes, Loans and Financing Receivable, Current	11,000,000		13,000,000
Notes, Loans and Financing Receivable, Gross, Current	50,000,000
Interest Income, Notes Receivable	$ 1,000,000ocr_InterestIncomeNotesReceivable	$ 1,000,000ocr_InterestIncomeNotesReceivable

An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) within one year of the balance sheet date or the normal operating cycle, whichever is longer. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

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