2.2.0.7 false Consolidated Statements of Income (USD $) 00020 - Statement - Consolidated Statements of Income true false In Thousands, except Per Share data false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 2 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 3 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 4 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ 3 Net revenue: 1 us-gaap_HealthCareOrganizationRevenueAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 4 Dialysis Care Revenue 2 us-gaap_HealthCareOrganizationPatientServiceRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 true true false false 2224321000 2224321 false false false 2 true true false false 2054104000 2054104 false false false 3 true true false false 4395105000 4395105 false false false 4 true true false false 3977425000 3977425 false false false xbrli:monetaryItemType monetary Amount of revenue recognized during the period for providing services to patients, primarily on an inpatient or outpatient basis and from office visits. For financial reporting purposes, patient service revenue is reflected net of provisions for contractual allowances (the amount needed to reduce the entity's gross billing rates to agreed-upon rates in contracts with third-party payers) and other adjustments. Significant revenue earned under capitation arrangements is reported separately. 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No authoritative reference available. true 12 Operating expenses: 1 us-gaap_OperatingExpensesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 13 Selling, general and administrative 2 us-gaap_SellingGeneralAndAdministrativeExpense us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 525557000 525557 false false false 2 false true false false 495119000 495119 false false false 3 false true false false 1043271000 1043271 false false false 4 false true false false 938686000 938686 false false false xbrli:monetaryItemType monetary The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. 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If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. 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