2109100 - Disclosure - Accrued Expenses link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - Accrued Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - Accrued Expenses (Tables) link:presentationLink link:calculationLink link:definitionLink 2104100 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2404408 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions - Blackstone Venture (Details) link:presentationLink link:calculationLink link:definitionLink 2404407 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions - HCP Master Lease Transaction and RIDEA Ventures Restructuring (Details) link:presentationLink link:calculationLink link:definitionLink 2404404 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions - Healthpeak CCRC Venture and Master Lease Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions - Revenue of Disposal Groups (Details) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 2404406 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions - Ventas Lease Portfolio Restructuring (Details) link:presentationLink link:calculationLink link:definitionLink 2404405 - Disclosure - Acquisitions, Dispositions and Other Significant Transactions - Welltower Lease and RIDEA Venture Restructuring (Details) link:presentationLink link:calculationLink link:definitionLink 2117100 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1001501 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1005000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - CONSOLIDATED STATEMENTS OF EQUITY link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 1002501 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 2408407 - Disclosure - Debt - 2018 Financings (Details) link:presentationLink link:calculationLink link:definitionLink 2408406 - Disclosure - Debt - 2019 Financings (Details) link:presentationLink link:calculationLink link:definitionLink 2408403 - Disclosure - Debt - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2408408 - Disclosure - Debt - Convertible Debt (Details) link:presentationLink link:calculationLink link:definitionLink 2408405 - Disclosure - Debt - Credit Facilities (Details) link:presentationLink link:calculationLink link:definitionLink 2408402 - Disclosure - Debt - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 2408404 - Disclosure - Debt - Schedule of Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 2308301 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - Description of Business link:presentationLink link:calculationLink link:definitionLink 2401401 - Disclosure - Description of Business - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2102100 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 2402401 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 2405404 - Disclosure - Fair Value Measurements - Goodwill and Asset Impairment (Details) link:presentationLink link:calculationLink link:definitionLink 2405403 - Disclosure - Fair Value Measurements - Interest Rate Caps (Details) link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - Fair Value Measurements - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - Goodwill and Other Intangible Assets, Net link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - Goodwill and Other Intangible Assets, Net - Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - Goodwill and Other Intangible Assets, Net - Other Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2307301 - Disclosure - Goodwill and Other Intangible Assets, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 2115100 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 2415403 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2415405 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2415406 - Disclosure - Income Taxes - Impact of Tax Cuts and Jobs Act (Details) link:presentationLink link:calculationLink link:definitionLink 2415402 - Disclosure - Income Taxes - Income Tax Expense (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 2415404 - Disclosure - Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 2315301 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 2415408 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2415407 - Disclosure - Income Taxes - Valuation Allowance (Details) link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - Investment in Unconsolidated Ventures link:presentationLink link:calculationLink link:definitionLink 2406404 - Disclosure - Investment in Unconsolidated Ventures - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2406403 - Disclosure - Investment in Unconsolidated Ventures - Equity Method Investments (Details) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - Investment in Unconsolidated Ventures (Tables) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Investment in Unconsolidated Ventures - Variable Interest Entities (Details) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 2410402 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2410404 - Disclosure - Leases - Facility Lease Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2410403 - Disclosure - Leases - Lease cost (Details) link:presentationLink link:calculationLink link:definitionLink 2410406 - Disclosure - Leases - Maturity ASC 840 (Details) link:presentationLink link:calculationLink link:definitionLink 2410405 - Disclosure - Leases - Maturity ASC 842 (Details) link:presentationLink link:calculationLink link:definitionLink 2310301 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - Property, Plant and Equipment and Leasehold Intangibles, Net link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - Property, Plant and Equipment and Leasehold Intangibles, Net - Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 2307301 - Disclosure - Property, Plant and Equipment and Leasehold Intangibles, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 2119100 - Disclosure - Quarterly Results of Operations (Unaudited) link:presentationLink link:calculationLink link:definitionLink 2419402 - Disclosure - Quarterly Results of Operations (Unaudited) (Details) link:presentationLink link:calculationLink link:definitionLink 2319301 - Disclosure - Quarterly Results of Operations (Unaudited) (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Retirement Plans link:presentationLink link:calculationLink link:definitionLink 2411401 - Disclosure - Retirement Plans (Details) link:presentationLink link:calculationLink link:definitionLink 2117100 - Disclosure - Revenue link:presentationLink link:calculationLink link:definitionLink 2417403 - Disclosure - Revenue - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2417402 - Disclosure - Revenue - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 2317301 - Disclosure - Revenue (Tables) link:presentationLink link:calculationLink link:definitionLink 2118100 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 2418402 - Disclosure - Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 2318301 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - Self-Insurance link:presentationLink link:calculationLink link:definitionLink 2410401 - Disclosure - Self-Insurance (Details) link:presentationLink link:calculationLink link:definitionLink 2114100 - Disclosure - Share Repurchase Program link:presentationLink link:calculationLink link:definitionLink 2414401 - Disclosure - Share Repurchase Program (Details) link:presentationLink link:calculationLink link:definitionLink 2113100 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 2413403 - Disclosure - Stock-Based Compensation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2413402 - Disclosure - Stock-Based Compensation - Restricted Stock Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2413404 - Disclosure - Stock-Based Compensation - Restricted Stock Grants (Details) link:presentationLink link:calculationLink link:definitionLink 2313301 - Disclosure - Stock-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 2401403 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2401406 - Disclosure - Summary of Significant Accounting Policies - Balance Sheet Adoption Effect (Details) link:presentationLink link:calculationLink link:definitionLink 2401404 - Disclosure - Summary of Significant Accounting Policies - Cash And Escrow Deposits (Details) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 2401405 - Disclosure - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 2301302 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 2116100 - Disclosure - Supplemental Disclosure of Cash Flow Information link:presentationLink link:calculationLink link:definitionLink 2416404 - Disclosure - Supplemental Disclosure of Cash Flow Information - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2416405 - Disclosure - Supplemental Disclosure of Cash Flow Information - Cash and Restricted Cash (Details) link:presentationLink link:calculationLink link:definitionLink 2416402 - Disclosure - Supplemental Disclosure of Cash Flow Information - Supplemental Disclosure of Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink 2416403 - Disclosure - Supplemental Disclosure of Cash Flow Information - Supplemental Schedule of Non-Cash Operating, Investing and Financing Activities (Details) link:presentationLink link:calculationLink link:definitionLink 2316301 - Disclosure - Supplemental Disclosure of Cash Flow Information (Tables) link:presentationLink link:calculationLink link:definitionLink 2121100 - Schedule - VALUATION AND QUALIFYING ACCOUNTS link:presentationLink link:calculationLink link:definitionLink 2421401 - Schedule - VALUATION AND QUALIFYING ACCOUNTS (Details) link:presentationLink link:calculationLink link:definitionLink