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Stock-Based Compensation Plans (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Stock Options |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Intrinsic value of options exercised | $ 20,028 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = avb_EmployeeAndDirectorsStockOptionsMember | $ 2,395 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = avb_EmployeeAndDirectorsStockOptionsMember | $ 26,746 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = avb_EmployeeAndDirectorsStockOptionsMember
2009 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 340,062 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member |  |
Options outstanding intrinsic value | 13,849 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member |  |
Options exercisable intrinsic value | 8,647 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member |  |
Options exercisable weighted average contractual life (in years) | 7 years 3 months 18 days |  |
1994 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 272,402 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member |  |
Options outstanding intrinsic value | 15,915 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member |  |
Options exercisable intrinsic value | $ 15,915 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member |  |
Options exercisable weighted average contractual life (in years) | 2 years 6 months |  |
40.00 - 49.99 | 1994 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 43,806 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTwoMember |  |
Exercise Price, lower limit (in dollars per share) | $ 40.00 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTwoMember |  |
Exercise Price, upper limit (in dollars per share) | $ 49.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTwoMember |  |
Weighted Average Remaining Contractual Term | 4 years 1 month 6 days |  |
60.00 - 69.99 | 1994 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 92 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeThreeMember |  |
Exercise Price, lower limit (in dollars per share) | $ 60.00 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeThreeMember |  |
Exercise Price, upper limit (in dollars per share) | $ 69.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeThreeMember |  |
Weighted Average Remaining Contractual Term | 0 years 1 month 6 days |  |
70.00 - 79.99 | 2009 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 32,821 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFourMember |  |
Exercise Price, lower limit (in dollars per share) | $ 70.00 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFourMember |  |
Exercise Price, upper limit (in dollars per share) | $ 79.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFourMember |  |
Weighted Average Remaining Contractual Term | 5 years 1 month 6 days |  |
70.00 - 79.99 | 1994 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 730 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFourMember |  |
Exercise Price, lower limit (in dollars per share) | $ 70.00 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFourMember |  |
Exercise Price, upper limit (in dollars per share) | $ 79.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFourMember |  |
Weighted Average Remaining Contractual Term | 0 years 6 months |  |
80.00 - 89.99 | 1994 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 66,101 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFiveMember |  |
Exercise Price, lower limit (in dollars per share) | $ 80.00 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFiveMember |  |
Exercise Price, upper limit (in dollars per share) | $ 89.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeFiveMember |  |
Weighted Average Remaining Contractual Term | 3 years 1 month 6 days |  |
90.00 - 99.99 | 1994 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 52,720 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeSixMember |  |
Exercise Price, lower limit (in dollars per share) | $ 90.00 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeSixMember |  |
Exercise Price, upper limit (in dollars per share) | $ 99.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeSixMember |  |
Weighted Average Remaining Contractual Term | 1 year 1 month 6 days |  |
110.00 - 119.99 | 2009 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 51,808 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeEightMember |  |
Exercise Price, lower limit (in dollars per share) | $ 110 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeEightMember |  |
Exercise Price, upper limit (in dollars per share) | $ 119.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeEightMember |  |
Weighted Average Remaining Contractual Term | 6 years 1 month 6 days |  |
120.00 - 129.99 | 2009 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 63,961 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeElevenMember |  |
Exercise Price, lower limit (in dollars per share) | $ 120 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeElevenMember |  |
Exercise Price, upper limit (in dollars per share) | $ 129.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeElevenMember |  |
Weighted Average Remaining Contractual Term | 8 years 2 months 12 days |  |
130.00 - 139.99 | 2009 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 189,973 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeNineMember |  |
Exercise Price, lower limit (in dollars per share) | $ 130 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeNineMember |  |
Exercise Price, upper limit (in dollars per share) | $ 139.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeNineMember |  |
Weighted Average Remaining Contractual Term | 7 years 7 months 6 days |  |
140.00 - 149.99 | 2009 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 1,499 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTenMember |  |
Exercise Price, lower limit (in dollars per share) | $ 140 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTenMember |  |
Exercise Price, upper limit (in dollars per share) | $ 149.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan2009Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTenMember |  |
Weighted Average Remaining Contractual Term | 7 years 6 months |  |
140.00 - 149.99 | 1994 Plan |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options (in shares) | 108,953 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTenMember |  |
Exercise Price, lower limit (in dollars per share) | $ 140 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTenMember |  |
Exercise Price, upper limit (in dollars per share) | $ 149.99 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_PlanNameAxis = avb_StockOptionAndIncentivePlan1994Member / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = avb_ExercisePriceRangeTenMember |  |
Weighted Average Remaining Contractual Term | 2 years 1 month 6 days |  |

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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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