v2.4.0.6

Stock-Based Compensation (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 plan	Dec. 31, 2011	Dec. 31, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of share-based compensation plans covering employees, officers and directors	5
Number of share-based compensation plans for executive officers	1
Number of share-based compensation plans for directors	2
Stock-Based Compensation
Unrecognized compensation cost related to nonvested awards	$ 18,200,000
Unrecognized compensation cost related to nonvested awards assumed in the NHP acquisition	100,000
Weighted average period over which cost is recognized (in years)	2 years 8 months 12 days
Fair value assumptions of stock options using Black-Scholes option pricing model
Expiration period of stock options (in years)	10 years
Employee Benefit Plan
Maximum 401(K) plan contribution by employer as a percent of employee's salary	3.50%
Aggregate employer 401(K) plan contribution during the period	768,000	267,000	200,000
Minimum
Stock-Based Compensation
Vesting period (in years)	2 years
Maximum
Stock-Based Compensation
Vesting period (in years)	3 years
Executive Deferred Stock Compensation Plan
Stock-Based Compensation
Number of shares reserved for issuance	500,000
Number of shares available for future issuance	500,000
Nonemployee Directors' Deferred Stock Compensation Plan
Stock-Based Compensation
Number of shares reserved for issuance	500,000
Number of shares available for future issuance	432,070
Stock Options
Stock-Based Compensation
Compensation cost	4,400,000	4,200,000	3,100,000
Unrecognized compensation cost related to nonvested awards	1,600,000
Weighted average period over which cost is recognized (in years)	1 year 2 months 12 days
Proceeds from options exercised	21,500,000	2,500,000	10,900,000
Fair value assumptions of stock options using Black-Scholes option pricing model
Risk-free interest rate, maximum (as a percent)	1.39%	2.78%	3.45%
Risk-free interest rate, minimum (as a percent)	0.68%	1.22%	2.00%
Dividend yield (as a percent)	6.75%	6.75%	6.75%
Volatility factors of the expected market price for our common stock, maximum (as a percent)	42.90%	44.30%	44.60%
Volatility factors of the expected market price for our common stock, minimum (as a percent)	35.90%	35.70%	37.10%
Stock Option, Shares
Outstanding at the beginning of the period (in shares)	2,047,005,000
Granted (in shares)	459,015,000
Options exercised (in shares)	(596,021,000)
Outstanding at the end of the period (in shares)	1,909,999,000	2,047,005,000
Exercisable at the end of the period (in shares)	1,488,579,000
Stock Option, Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 42.10
Options granted (in shares)	$ 55.58
Options exercised (in dollars per share)	$ 36.14
Outstanding at the end of the period (in dollars per share)	$ 47.20	$ 42.10
Exercisable at the end of the period (in dollars per share)	$ 44.96
Stock Option, Weighted Average Remaining Contractual Life (years)
Outstanding at the end of the period (in years)	6 years 10 months 24 days
Exercisable at the end of the period (in years)	6 years 3 months 18 days
Stock Option, Intrinsic Value
Outstanding at the end of the period	33,469,000
Exercisable at the end of the period	29,410,000
Nonvested Stock Options, Shares
Nonvested stock options at the beginning of the period (in shares)	361,040,000
Granted (in shares)	459,015,000
Vested (in shares)	(398,629,000)
Nonvested stock options at the end of the period (in shares)	421,426,000	361,040,000
Nonvested Stock Options, Weighted Average Grant Date Fair Value
Nonvested stock options at the beginning of the period (in dollars per share)	$ 10.76
Granted (in dollars per share)	$ 10.54
Vested (in dollars per share)	$ 10.40
Nonvested stock options at the end of the period (in dollars per share)	$ 10.86	$ 10.76
Stock Options | Minimum
Fair value assumptions of stock options using Black-Scholes option pricing model
Weighted average expected life of options, maximum (in years)	4 years 3 months	4 years 3 months	4 years 3 months
Stock Option, Range of Exercise Prices
Range of exercise price, low end of range (in dollars per share)	$ 11.86	$ 11.45
Exercise price range, options granted (in dollars per share)	$ 55.13
Exercise price range, options assumed from NHP (in dollars per share)	$ 0.00
Exercise price range, options excercised (in dollars per share)	$ 11.45
Exercise price range, options excercisable (in dollars per share)	$ 11.86
Stock Options | Maximum
Fair value assumptions of stock options using Black-Scholes option pricing model
Weighted average expected life of options, maximum (in years)	7 years	7 years	7 years
Stock Option, Range of Exercise Prices
Range of exercise price, high end of range (in dollars per share)	$ 57.19	$ 57.19
Exercise price range, options granted (in dollars per share)	$ 55.69
Exercise price range, options assumed from NHP (in dollars per share)	$ 0.00
Exercise price range, options excercised (in dollars per share)	$ 57.19
Exercise price range, options excercisable (in dollars per share)	$ 57.19
Restricted Stock
Nonvested Restricted Stock and Restricted Stock Units, Shares
Nonvested at the beginning of the period (in shares)	592,198,000
Granted (in shares)	276,484,000
Vested (in shares)	(271,224,000)
Forfeited (in shares)	(5,574,000)
Nonvested at the end of the period (in shares)	591,884,000
Nonvested Restricted Stock and Restricted Stock Units, Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 50.09
Granted (in dollars per share)	$ 55.61
Vested (in dollars per share)	$ 50.12
Forfeited (in dollars per share)	$ 49.36
Nonvested at the end of the period (in dollars per share)	$ 52.66
Restricted Stock Units
Nonvested Restricted Stock and Restricted Stock Units, Shares
Nonvested at the beginning of the period (in shares)	33,289,000
Granted (in shares)	4,112,000
Vested (in shares)	(30,576,000)
Nonvested at the end of the period (in shares)	6,825,000
Nonvested Restricted Stock and Restricted Stock Units, Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 50.04
Granted (in dollars per share)	$ 55.13
Vested (in dollars per share)	$ 50.65
Nonvested at the end of the period (in dollars per share)	$ 50.34
Restricted Stock Units | Minimum
Stock-Based Compensation
Vesting period (in years)	2 years
Restricted Stock Units | Maximum
Stock-Based Compensation
Vesting period (in years)	5 years
Restricted Stock Units | General and administrative expenses
Stock-Based Compensation
Compensation cost	$ 16,400,000	$ 15,100,000	$ 11,000,000
Employee and Director Stock Purchase Plan
Stock-Based Compensation
Number of shares reserved for issuance	2,500,000
Number of shares available for future issuance	2,446,155
Number of shares purchased	53,845
Employee and Director Stock Purchase Plan | Minimum
Stock-Based Compensation
Purchase price of common stock shares with respect to the employee tax-favored portion of the plan (as a percent)	90.00%
Purchase price of common stock shares with respect to the additional employee and director portion of the plan (as a percent)	95.00%
2012 Incentive Plan
Stock-Based Compensation
Number of shares reserved for future issuance	8,836,614
2012 Incentive Plan | Stock Options
Stock-Based Compensation
Number of shares reserved for issuance	1,835,325
2012 Incentive Plan | Restricted Stock or Restricted Stock Units
Stock-Based Compensation
Number of shares reserved for issuance	595,480
2012 Incentive Plan | Shares under 2006 Incentive Plan
Stock-Based Compensation
Number of shares reserved for issuance	1,336,614
2012 Incentive Plan | New Shares
Stock-Based Compensation
Number of shares reserved for issuance	7,500,000

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Net number of share options (or share units) granted during the period.

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the purchase price of common stock shares with respect to the employee tax-favored portion of the plan.

+ References

No definition available.

+ Details

Name:	vtr_PurchasePriceOfCommonStockSharesWithRespectToEmployeeTaxFavoredPortionOfPlan
Namespace Prefix:	vtr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period in Years

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodInYears
Namespace Prefix:	vtr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of share-based compensation plans under which outstanding options to purchase common stock and/or shares or units of restricted stock have been, or may be, granted to officers, employees and non-employee directors.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlansEmployeesOfficersAndDirectors
Namespace Prefix:	vtr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of share-based compensation plans approved by the entity's shareholders for directors.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlansForDirectors
Namespace Prefix:	vtr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of share-based compensation plans approved by the entity's shareholders for executive officers.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlansForExecutiveOfficers
Namespace Prefix:	vtr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionAggregateIntrinsicValueAbstract
Namespace Prefix:	vtr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of outstanding awards on stock option plans for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedNumber
Namespace Prefix:	vtr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedRollForward
Namespace Prefix:	vtr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The decrease in the number of shares (or other type of equity) issuable under stock option plan pertaining to awards for which the grantee has gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedVestedInPeriod
Namespace Prefix:	vtr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average fair value as of grant date pertaining to a stock option award for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with terms of the arrangement.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	vtr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average fair value of nonvested awards on stock option plans for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix:	vtr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract
Namespace Prefix:	vtr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	vtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAbstract
Namespace Prefix:	vtr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The exercise price for purposes of disclosing shares assumed from NHP under stock option awards on all stock option plans.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceOfAssumedFromNhpOptions
Namespace Prefix:	vtr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The exercise price for purposes of disclosing shares exercisable under stock option awards on all stock option plans.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceOfExercisableOptions
Namespace Prefix:	vtr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The exercise price for purposes of disclosing shares exercised under stock option awards on all stock option plans.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceOfExercisedOptions
Namespace Prefix:	vtr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The exercise price for purposes of disclosing shares granted under stock option awards on all stock option plans.

+ References

No definition available.

+ Details

Name:	vtr_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceOfGrantedOptions
Namespace Prefix:	vtr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	vtr_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract
Namespace Prefix:	vtr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares issued from the inception of the plan to the end of the reporting period.

+ References

No definition available.

+ Details

Name:	vtr_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlansCumulative
Namespace Prefix:	vtr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant