The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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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 outstanding.

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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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Equity impact of the value of stock bought back by the entity at the exercise price or redemption price.

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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. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares
Redeemable OP Unitholder Interests
Stock redeemed \| $		$ 24.3
Fair value of redeemable OP unitholder \| $		$ 177.2	$ 188.5
Capital Unit, Class C
Redeemable OP Unitholder Interests
Capital units redeemed (units)		331,208
Capital Unit, Ventas Realty OP
Redeemable OP Unitholder Interests
Capital units redeemed (units)		65,581	9,309
Class A Units
Redeemable OP Unitholder Interests
Limited partnership units held by third party investors (in shares)		2,746,737
Class B Units
Redeemable OP Unitholder Interests
Limited partnership units outstanding (in shares)		7,156,146
NHP/PMB L.P. \| Class A Units
Redeemable OP Unitholder Interests
Percentage of ownership interest on total units outstanding		27.70%
NHP/PMB L.P. \| Class B Units
Redeemable OP Unitholder Interests
Percentage of ownership interest on total units outstanding		72.30%
Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class A Units
Redeemable OP Unitholder Interests
Percentage of ownership interest on total units outstanding		1.10%
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)		341,776
Capital units redeemed (units)			445,541
Capital account redemptions \| $			$ 33.2
Ventas Realty Capital Healthcare Trust Operating Partnership, LP \| Class B Units
Redeemable OP Unitholder Interests
Percentage of ownership interest on total units outstanding		98.90%
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)		29,327,561
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
CCP \| Spinoff
Redeemable OP Unitholder Interests
Unit conversion factor for common stock		0.9051
Common Stock
Redeemable OP Unitholder Interests
Conversion of stock, shares issued		390,558
Subsequent Event
Redeemable OP Unitholder Interests
Stock redeemed \| $	$ 20.9
Subsequent Event \| Capital Unit, Class C
Redeemable OP Unitholder Interests
Capital units redeemed (units)	341,776
Subsequent Event \| Common Stock
Redeemable OP Unitholder Interests
Conversion of stock, shares issued	341,776