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Stockholder's Equity (Details 4)
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Dec. 31, 2013
Stockholders' Equity [Line Items]        
Preferred stock conversions 0hcn_CumulativeConvertiblePreferredStockConvertedIntoCommonStock   (233,236)hcn_CumulativeConvertiblePreferredStockConvertedIntoCommonStock  
Preferred Stock, Shares Outstanding 25,875,000us-gaap_PreferredStockSharesOutstanding 25,875,000us-gaap_PreferredStockSharesOutstanding 25,875,000us-gaap_PreferredStockSharesOutstanding 26,108,236us-gaap_PreferredStockSharesOutstanding
Preferred stock balance weighted average rate 0.065hcn_PreferredStockDividendPercentage 0.065hcn_PreferredStockDividendPercentage 0.065hcn_PreferredStockDividendPercentage 0.06496hcn_PreferredStockDividendPercentage
Preferred stock balance issued weighted average rate 0hcn_PreferredStockIssuedDividendPercentage   0hcn_PreferredStockIssuedDividendPercentage  
Preferred stock balance redeemed weighted average rate 0hcn_PreferredStockRedeemedDividendPercentage   0hcn_PreferredStockRedeemedDividendPercentage  
Preferred stock converted weighted average rate 0hcn_PreferredStockConvertedPercentage   0.06hcn_PreferredStockConvertedPercentage