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Consolidated Statements Of Equity And Perpetual Preferred Units (USD $) | Total | Common Shares Of Beneficial Interest | Additional Paid-In Capital | Distributions In Excess Of Net Income | Treasury Shares, At Cost | Accumulated Other Comprehensive Income (Loss) | Noncontrolling Interests | Perpetual Preferred Units
--- | --- | --- | --- | --- | --- | --- | --- | ---
Equity, Beginning Balance at Dec. 31, 2011 | $ 1,827,768,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 845,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 2,901,024,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (690,466,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember | $ (452,003,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | $ (683,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 69,051,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Perpetual Preferred Units, Beginning Balance at Dec. 31, 2011 |  |  |  |  |  |  |  | 97,925,000 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_CapitalUnitsMember
Net Income | 291,049,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests |  |  | 283,390,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  | 7,659,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | 2,851,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_CapitalUnitsMember
Other comprehensive loss | (379,000)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  | (379,000)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Common shares issued | 693,355,000 us-gaap_StockIssuedDuringPeriodValueNewIssues | 112,000 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 693,243,000 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |
Net share awards | 15,146,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures |  | 1,008,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 14,138,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Employee share purchase plan | 1,334,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan |  | 617,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 717,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Common share options exercised | 13,966,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised |  | 2,173,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 11,793,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Conversions and redemptions of operating partnership units | (149,000)us-gaap_StockIssuedDuringPeriodValueConversionOfUnits | 6,000 us-gaap_StockIssuedDuringPeriodValueConversionOfUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 8,988,000 us-gaap_StockIssuedDuringPeriodValueConversionOfUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (9,143,000)us-gaap_StockIssuedDuringPeriodValueConversionOfUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Cash distributions declared to perpetual preferred units |  |  |  |  |  |  |  | (776,000)cpt_DistributionsToPerpetualPreferredUnitHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_CapitalUnitsMember
Cash distributions declared to equity holders | (198,900,000)us-gaap_DividendsCommonStockCash |  |  | (191,875,000)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  | (7,025,000)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Redemption of perpetual preferred units | (100,000,000)cpt_RedemptionOfPerpetualPreferredUnits |  |  |  |  |  |  | (100,000,000)cpt_RedemptionOfPerpetualPreferredUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_CapitalUnitsMember
Purchase of non-controlling interests | (16,482,000)us-gaap_MinorityInterestDecreaseFromRedemptions |  | (19,549,000)us-gaap_MinorityInterestDecreaseFromRedemptions / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (3,067,000)us-gaap_MinorityInterestDecreaseFromRedemptions / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Other | 0 us-gaap_StockholdersEquityOther | (1,000)us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,000 us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |
Equity, Ending Balance at Dec. 31, 2012 | 2,626,708,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 962,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 3,587,505,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (598,951,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember | (425,355,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (1,062,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 63,609,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Perpetual Preferred Units, Ending Balance at Dec. 31, 2012 |  |  |  |  |  |  |  | 0 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_CapitalUnitsMember
Net Income | 346,291,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests |  |  | 336,364,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  | 9,927,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Other comprehensive loss | (44,000)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  | (44,000)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Common shares issued | 40,044,000 us-gaap_StockIssuedDuringPeriodValueNewIssues | 6,000 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 40,038,000 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |
Net share awards | 17,578,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures | (1,000)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 4,921,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 12,658,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Employee share purchase plan | 918,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan |  | 449,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 469,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Common share options exercised | 2,842,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised |  | 841,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 2,001,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Change in classification of deferred compensation plan | (37,958,000)cpt_ChangeinclassificationofdeferredcompensationplanEquity |  | (37,958,000)cpt_ChangeinclassificationofdeferredcompensationplanEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |
Change in redemption value of non-qualified share awards | (9,575,000)cpt_Changeinredemptionvalueofeligiblenonqualifiedshareawards |  |  | (9,575,000)cpt_Changeinredemptionvalueofeligiblenonqualifiedshareawards / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  |  |
Diversification of share awards within deferred compensation plan | 353,000 cpt_DiversificationofshareawardswithindeferredcompensationplanEquity |  | 221,000 cpt_DiversificationofshareawardswithindeferredcompensationplanEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 132,000 cpt_DiversificationofshareawardswithindeferredcompensationplanEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  |  |
Conversions and redemptions of operating partnership units | (52,000)us-gaap_StockIssuedDuringPeriodValueConversionOfUnits |  | 52,000 us-gaap_StockIssuedDuringPeriodValueConversionOfUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (104,000)us-gaap_StockIssuedDuringPeriodValueConversionOfUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Cash distributions declared to equity holders | (226,924,000)us-gaap_DividendsCommonStockCash |  |  | (222,137,000)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  | (4,787,000)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Redemption of perpetual preferred units | 0 cpt_RedemptionOfPerpetualPreferredUnits |  |  |  |  |  |  |
Equity, Ending Balance at Dec. 31, 2013 | 2,760,181,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 967,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 3,596,069,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (494,167,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember | (410,227,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (1,106,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 68,645,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Perpetual Preferred Units, Ending Balance at Dec. 31, 2013 |  |  |  |  |  |  |  | 0 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_CapitalUnitsMember
Net Income | 301,314,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests |  |  | 292,089,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  | 9,225,000 cpt_NetIncomeAttributableToCommonShareholdersAndNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Other comprehensive loss | (1,313,000)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  | (1,313,000)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Common shares issued | 66,225,000 us-gaap_StockIssuedDuringPeriodValueNewIssues | 9,000 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 66,216,000 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |
Net share awards | 19,368,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures |  | 8,010,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 11,358,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Employee share purchase plan | 2,271,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan |  | 1,012,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 1,259,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Common share options exercised | 1,502,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 1,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 517,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 984,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |
Change in classification of deferred compensation plan | (7,702,000)cpt_ChangeinclassificationofdeferredcompensationplanEquity |  | (7,702,000)cpt_ChangeinclassificationofdeferredcompensationplanEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |
Change in redemption value of non-qualified share awards | (17,921,000)cpt_Changeinredemptionvalueofeligiblenonqualifiedshareawards |  |  | (17,921,000)cpt_Changeinredemptionvalueofeligiblenonqualifiedshareawards / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  |  |
Diversification of share awards within deferred compensation plan | 4,669,000 cpt_DiversificationofshareawardswithindeferredcompensationplanEquity |  | 3,273,000 cpt_DiversificationofshareawardswithindeferredcompensationplanEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 1,396,000 cpt_DiversificationofshareawardswithindeferredcompensationplanEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  |  |
Conversions and redemptions of operating partnership units | 0 us-gaap_StockIssuedDuringPeriodValueConversionOfUnits | 0 us-gaap_StockIssuedDuringPeriodValueConversionOfUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 52,000 us-gaap_StockIssuedDuringPeriodValueConversionOfUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (52,000)us-gaap_StockIssuedDuringPeriodValueConversionOfUnits / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Cash distributions declared to equity holders | (240,185,000)us-gaap_DividendsCommonStockCash |  |  | (235,174,000)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember |  |  | (5,011,000)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Redemption of perpetual preferred units | 0 cpt_RedemptionOfPerpetualPreferredUnits |  |  |  |  |  |  |
Other |  | (1,000)us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,000 us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |
Equity, Ending Balance at Dec. 31, 2014 | $ 2,888,409,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 976,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 3,667,448,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (453,777,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember | $ (396,626,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | $ (2,419,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 72,807,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |

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- Definition The value of share awards reclassed from additional paid in capital into temporary equity following amendment of the Non-Qualified Deferred Compensation plan permitting diversification of awards into other equity securities subject to a six month holding period and at the holders’ option. + References No definition available. + Details
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