Share-Based Compensation (Details) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
Sep. 30, 2016USD ($)Rate$ / sharesshares | Sep. 30, 2015USD ($) | Sep. 30, 2016USD ($)Rate$ / sharesshares | Sep. 30, 2015USD ($) | Dec. 31, 2015$ / sharesshares |
Share-based compensation, allocation and classification in financial statements [Abstract] | | | | | |
Compensation cost charged to income for the Company's share-based compensation plans | $ | $ 3.2 | $ 1.3 | $ 9.2 | $ 8.9 | |
Reversal of Prior Period Share Based Compensation Expense | $ | | 2.7 | | 2 | |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount | $ | $ 0.6 | $ 0.2 | $ 1.9 | 1.6 | |
2008 Omnibus Plan [Member] | | | | | |
Deferred compensation arrangements [Abstract] | | | | | |
Aggregate number of Company common shares or Operating Partnership units approved for awards under the 2008 Omnibus Plan, amended (in shares) | 8,500,000 | | 8,500,000 | | |
The ratio at which non-option awards granted after the 2010 amendment are deducted from the shares available for grant | Rate | 1.85 | | 1.85 | | |
The ratio at which non-option awards granted prior to the 2010 amendment are deducted from the shares available for grant | Rate | 2.85 | | 2.85 | | |
The ratio at which options awards granted are deducted from the shares available for grant | | | one-for-one | | |
Employee Stock Option [Member] | | | | | |
Summary of option activity [Roll Forward] | | | | | |
Outstanding at January 1, 2016 | | | 292,543 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | | | (89,957) | | |
Outstanding at September 30, 2016 | 202,586 | | 202,586 | | 292,543 |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price | $ / shares | | | $ 42.66 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ / shares | $ 48.35 | | $ 48.35 | | $ 46.60 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | | | 1 year | | 1 year 4 months 28 days |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit | $ / shares | | | $ 45.90 | | $ 35.50 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit | $ / shares | | | $ 51.15 | | $ 51.15 |
Fully vested options at September 30, 2016 | 202,586 | | 202,586 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares | $ 48.35 | | $ 48.35 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | | | 1 year | | |
Summary of option activity, additional disclosures [Abstract] | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | | 0 | | |
Aggregate intrinsic value of in-the-money options outstanding | $ | $ 5.3 | | $ 5.3 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Number Of Forfeitures | | | 0 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | $ | | | $ 2.4 | 10 | |
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options | $ | | | 3.8 | $ 6.8 | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options | $ | 0 | | $ 0 | | |
Unissued Partnership Units Under Unit Option Deferral Election Member | | | | | |
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] | | | | | |
Options exercised under unit option deferral election plan (in shares) | | | 3,000,000 | | |
The number of mature units tendered for the exercise of previously issued stock options under the unit option deferral election plan (in shares) | | | 2,100,000 | | |
The number of units deferred under the unit option deferral election upon the exercise of previously issued stock options (in shares) | | | 900,000 | | |
Date at which deferred partnership units begin to be issued | | | December 2,022 | | |
Number of Annual Installments during which Deferred Partnership Units will be issued | | | five | | |
Profits Units [Member] | | | | | |
Summary of non-option activity, additional disclosures [Abstract] | | | | | |
Awards under the 2008 Omnibus Plan | | | represents a contingent right to receive a partnership unit upon vesting and the satisfaction of certain tax-driven requirements. Until vested, a Profits Unit entitles the holder to only one-tenth of the distributions payable on a partnership unit. Therefore, the Company accounts for these Profits Units as participating securities in the Operating Partnership. A portion of the Profits Units award represents estimated cash distributions that otherwise would have been payable during the vesting period and, upon vesting, there will be an adjustment in Profits Units to reflect actual cash distributions during such period | | |
Summary of non-option activity [Roll Forward] | | | | | |
Relationship between TRG units owned by TCO and TCO common shares outstanding | | | each partnership unit held by a participant is exchangeable for one share of the Company's common stock | | |
Units of Partnership Interest, Terms of Conversion | | | one share of Series B Preferred Stock of the Company for each partnership unit held | | |
Restricted TRG Profits Units [Member] | | | | | |
Summary of non-option activity, additional disclosures [Abstract] | | | | | |
Weighted average grant-date fair value | $ / shares | | | $ 59.89 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized | $ | $ 3.5 | | $ 3.5 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | | | 2 years 3 months 18 days | | |
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Vested At End Of Period | | | 0 | | |
Summary of non-option activity [Roll Forward] | | | | | |
Outstanding at January 1, 2016 | | | 0 | | |
Granted | | | 68,045 | | |
Outstanding at September 30, 2016 | 68,045 | | 68,045 | | 0 |
Outstanding at beginning of period, weighted average grant date fair value (in dollars per share) | $ / shares | | | $ 0 | | |
Granted, weighted average grant date fair value (in dollars per share) | $ / shares | | | 59.89 | | |
Outstanding at end of period, weighted average grant date fair value (in dollars per share) | $ / shares | $ 59.89 | | $ 59.89 | | $ 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | | | 1.85% | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 2 years 7 months 6 days | | |
TSR Performance-based TRG Profits Units [Member] | | | | | |
Summary of non-option activity, additional disclosures [Abstract] | | | | | |
Weighted average grant-date fair value | $ / shares | | | $ 26.42 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized | $ | $ 2.8 | | $ 2.8 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | | | 2 years 4 months 24 days | | |
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Vested At End Of Period | | | 0 | | |
Summary of non-option activity [Roll Forward] | | | | | |
Outstanding at January 1, 2016 | | | 0 | | |
Granted | | | 119,123 | | |
Outstanding at September 30, 2016 | 119,123 | | 119,123 | | 0 |
Outstanding at beginning of period, weighted average grant date fair value (in dollars per share) | $ / shares | | | $ 0 | | |
Granted, weighted average grant date fair value (in dollars per share) | $ / shares | | | 26.42 | | |
Outstanding at end of period, weighted average grant date fair value (in dollars per share) | $ / shares | $ 26.42 | | $ 26.42 | | $ 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | | | 1.03% | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 3 years | | |
NOI Performance-based TRG Profits Units [Member] | | | | | |
Summary of non-option activity, additional disclosures [Abstract] | | | | | |
Weighted average grant-date fair value | $ / shares | | | $ 19.41 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized | $ | $ 2 | | $ 2 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | | | 2 years 4 months 24 days | | |
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Vested At End Of Period | | | 0 | | |
Summary of non-option activity [Roll Forward] | | | | | |
Outstanding at January 1, 2016 | | | 0 | | |
Granted | | | 119,123 | | |
Outstanding at September 30, 2016 | 119,123 | | 119,123 | | 0 |
Outstanding at beginning of period, weighted average grant date fair value (in dollars per share) | $ / shares | | | $ 0 | | |
Granted, weighted average grant date fair value (in dollars per share) | $ / shares | | | 19.41 | | |
Outstanding at end of period, weighted average grant date fair value (in dollars per share) | $ / shares | $ 19.41 | | $ 19.41 | | $ 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | | | 1.03% | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 3 years | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expected Percentage of Units To Be Issued Based On Management's Assumptions | | | one-third | | |
Performance Share Units (PSUs) [Member] | | | | | |
Summary of non-option activity, additional disclosures [Abstract] | | | | | |
Right to Receive Upon Vesting Shares of Common Stock as Percentage of PSU, Actual Vested During Period | | | 0.00% | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized | $ | $ 3.9 | | $ 3.9 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | | | 1 year | | |
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Vested At End Of Period | | | 0 | | |
Summary of non-option activity [Roll Forward] | | | | | |
Outstanding at January 1, 2016 | | | 255,478 | | |
Vested | | | (44,866) | | |
Forfeited | | | (33,529) | | |
Outstanding at September 30, 2016 | 177,083 | | 177,083 | | 255,478 |
Outstanding at beginning of period, weighted average grant date fair value (in dollars per share) | $ / shares | | | $ 134.52 | | |
Vested, weighted average grant date fair value (in dollars per share) | $ / shares | | | 96.61 | | |
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares | | | 142.69 | | |
Outstanding at end of period, weighted average grant date fair value (in dollars per share) | $ / shares | $ 142.59 | | $ 142.59 | | $ 134.52 |
Restricted Share Units (RSUs) [Member] | | | | | |
Summary of non-option activity, additional disclosures [Abstract] | | | | | |
Awards under the 2008 Omnibus Plan | | | represent the right to receive upon vesting one share of the Company's common stock, plus a cash payment equal to the aggregate cash dividends that would have been paid on such shares of common stock from the date of grant of the award to the vesting date | | |
Weighted average grant-date fair value | $ / shares | | | $ 73.42 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized | $ | $ 5.9 | | $ 5.9 | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | | | 1 year 8 months 12 days | | |
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Vested At End Of Period | | | 0 | | |
Summary of non-option activity [Roll Forward] | | | | | |
Outstanding at January 1, 2016 | | | 283,353 | | |
Vested | | | (89,986) | | |
Granted | | | 55,888 | | |
Forfeited | | | (16,282) | | |
Outstanding at September 30, 2016 | 232,973 | | 232,973 | | 283,353 |
Outstanding at beginning of period, weighted average grant date fair value (in dollars per share) | $ / shares | | | $ 69.93 | | |
Vested, weighted average grant date fair value (in dollars per share) | $ / shares | | | 71.57 | | |
Granted, weighted average grant date fair value (in dollars per share) | $ / shares | | | 73.42 | | |
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares | | | 69.13 | | |
Outstanding at end of period, weighted average grant date fair value (in dollars per share) | $ / shares | $ 70.20 | | $ 70.20 | | $ 69.93 |