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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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The number of limited partner units issued.

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Total change in each class of partners' capital accounts during the year due to redemptions and adjustments to redemption value. All partners include general, limited and preferred partners.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Business Combination, Consideration Transferred, Stock Conversion Ratio, Per Acquiree Share

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Unit conversion factor for common stock assigned at the time of the merger.

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Accounting Policies (Redeemable OP Unitholder and Noncontrolling Interests) (Details) $ in Millions		1 Months Ended		12 Months Ended
	Jan. 16, 2015 shares	Feb. 10, 2016 shares	Apr. 30, 2015 USD ($) shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($)
Redeemable OP Unitholder Interests
Fair value of redeemable OP unitholder \| $				$ 188.5	$ 159.1
Class A Units
Redeemable OP Unitholder Interests
Limited partnership units held by third party investors (in shares)				2,812,318
Class B Units
Redeemable OP Unitholder Interests
Limited partnership units outstanding (in shares)				6,917,009
NHP/PMB L.P.
Redeemable OP Unitholder Interests
Unit conversion factor for common stock				0.7866
NHP/PMB L.P. \| Class A Units
Redeemable OP Unitholder Interests
Percentage of ownership interest on total units outstanding				28.90%
NHP/PMB L.P. \| Class B Units
Redeemable OP Unitholder Interests
Percentage of ownership interest on total units outstanding				71.10%
American Realty Capital Healthcare Trust
Redeemable OP Unitholder Interests
Business combination, consideration transferred, stock conversion ratio, per acquiree share	0.1688
American Realty Capital Healthcare Trust \| Class B Units
Redeemable OP Unitholder Interests
Limited partners' capital account, units issued (in shares)	7,057,271
Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class A Units
Redeemable OP Unitholder Interests
Percentage of ownership interest on total units outstanding				2.30%
Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class A Units \| Capital Unit, Class C
Redeemable OP Unitholder Interests
Limited partnership units held by third party investors (in shares)				672,984
Capital units redeemed (units)			445,541
Capital account redemptions \| $			$ 32.6
Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class B Units
Redeemable OP Unitholder Interests
Percentage of ownership interest on total units outstanding				97.70%
Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class B Units \| Capital Unit, Class C
Redeemable OP Unitholder Interests
Limited partnership units outstanding (in shares)				28,550,812
Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class B Units \| Capital Unit, Ventas Realty OP
Redeemable OP Unitholder Interests
Limited partnership units outstanding (in shares)				176,374
Subsequent Event \| Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class A Units
Redeemable OP Unitholder Interests
Conversion of stock, shares issued		303,136
Subsequent Event \| Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class A Units \| Capital Unit, Class C
Redeemable OP Unitholder Interests
Capital units redeemed (units)		303,136
CCP \| Spinoff
Redeemable OP Unitholder Interests
Unit conversion factor for common stock				0.9051