v2.4.0.6
Borrowing Arrangements (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Unsecured revolving credit facilities
Dec. 31, 2011
Unsecured revolving credit facilities
Dec. 31, 2012
9% Senior Notes due 2012
Dec. 31, 2011
9% Senior Notes due 2012
Dec. 31, 2012
8 1/4% Senior Notes due 2012
Dec. 31, 2011
8 1/4% Senior Notes due 2012
Dec. 31, 2012
Unsecured term loan due 2013
Dec. 31, 2011
Unsecured term loan due 2013
Dec. 31, 2012
6.25% Senior Notes due 2013
Dec. 31, 2011
6.25% Senior Notes due 2013
Dec. 31, 2012
Unsecured term loan due 2015
Dec. 31, 2011
Unsecured term loan due 2015
Dec. 31, 2012
3.125% Senior Notes due 2015
Dec. 31, 2011
3.125% Senior Notes due 2015
Nov. 30, 2010
3.125% Senior Notes due 2015
Dec. 31, 2012
6% Senior Notes due 2015
Dec. 31, 2011
6% Senior Notes due 2015
Dec. 31, 2012
6 1/2% Senior Notes due 2016
Dec. 31, 2011
6 1/2% Senior Notes due 2016
Dec. 31, 2012
Unsecured term loan due 2017
Dec. 31, 2011
Unsecured term loan due 2017
Dec. 31, 2012
6 3/4% Senior Notes due 2017
Dec. 31, 2011
6 3/4% Senior Notes due 2017
Dec. 31, 2010
6 3/4% Senior Notes due 2017
Dec. 31, 2012
Unsecured term loan due 2018
Dec. 31, 2011
Unsecured term loan due 2018
Dec. 31, 2012
2.00% Senior Notes due 2018
Dec. 31, 2011
2.00% Senior Notes due 2018
Dec. 31, 2012
4.00% Senior Notes due 2019
Apr. 30, 2012
4.00% Senior Notes due 2019
Dec. 31, 2011
4.00% Senior Notes due 2019
Dec. 31, 2012
4.750% Senior Notes due 2021
Dec. 31, 2011
4.750% Senior Notes due 2021
May 31, 2011
4.750% Senior Notes due 2021
Dec. 31, 2012
4.25% senior notes due 2022
Feb. 29, 2012
4.25% senior notes due 2022
Dec. 31, 2011
4.25% senior notes due 2022
Dec. 31, 2012
3.25% Senior Notes due 2022
Dec. 31, 2011
3.25% Senior Notes due 2022
Dec. 31, 2012
6.90% Senior Notes due 2037
Dec. 31, 2011
6.90% Senior Notes due 2037
Dec. 31, 2012
6.59% Senior Notes due 2038
Dec. 31, 2011
6.59% Senior Notes due 2038
Dec. 31, 2012
Mortgage loans and other
Dec. 31, 2011
Mortgage loans and other
Dec. 31, 2012
Unsecured term loan
Dec. 31, 2012
Mortgage loans property loan
Dec. 31, 2011
Mortgage loans property loan
Debt instruments                                                                                                      
Total $ 8,186,315,000 $ 6,180,443,000   $ 540,727,000 $ 455,578,000 $ 0 $ 82,433,000 $ 0 $ 72,950,000 $ 0 $ 200,000,000 $ 269,850,000 $ 269,850,000 $ 130,336,000 [1] $ 126,875,000 [1] $ 400,000,000 $ 400,000,000   $ 234,420,000 $ 234,420,000 $ 0 $ 200,000,000 $ 375,000,000 [1] $ 375,000,000 [1] $ 0 $ 225,000,000   $ 180,000,000 $ 0 $ 700,000,000 $ 0 $ 600,000,000 $ 600,000,000 $ 0 $ 700,000,000 $ 700,000,000 $ 700,000,000 $ 600,000,000 $ 600,000,000 $ 0 $ 500,000,000 $ 0 $ 52,400,000 $ 52,400,000 $ 22,973,000 $ 22,973,000 $ 2,880,609,000 [2] $ 2,762,964,000 [2]   $ 23,200,000 $ 14,600,000
Capital lease obligations 142,412,000 143,006,000                                                                                                  
Unamortized fair value adjustment 111,623,000 144,923,000                                                                                                  
Unamortized commission fees and discounts (26,704,000) (39,256,000)                                                                                                  
Senior notes payable and other debt 8,413,646,000 6,429,116,000                                                                                                  
Interest rate (as a percent) 9.00%   7.125%     9.00% 9.00% 8.25% 8.25%     6.25% 6.25%     3.125% 3.125% 3.125% 6.00% 6.00% 6.50% 6.50%     6.75% 6.75% 6.75%     2.00% 2.00% 4.00% 400.00% 4.00% 4.75% 4.75% 4.75% 4.25% 4.25% 4.25% 3.25% 3.25% 6.90% 6.90% 6.59% 6.59%          
Amount outstanding       540,700,000                                                                                         500,000,000    
Principal amount outstanding $ 8,186,315,000 $ 6,180,443,000   $ 540,727,000 $ 455,578,000 $ 0 $ 82,433,000 $ 0 $ 72,950,000 $ 0 $ 200,000,000 $ 269,850,000 $ 269,850,000 $ 130,336,000 [1] $ 126,875,000 [1] $ 400,000,000 $ 400,000,000   $ 234,420,000 $ 234,420,000 $ 0 $ 200,000,000 $ 375,000,000 [1] $ 375,000,000 [1] $ 0 $ 225,000,000   $ 180,000,000 $ 0 $ 700,000,000 $ 0 $ 600,000,000 $ 600,000,000 $ 0 $ 700,000,000 $ 700,000,000 $ 700,000,000 $ 600,000,000 $ 600,000,000 $ 0 $ 500,000,000 $ 0 $ 52,400,000 $ 52,400,000 $ 22,973,000 $ 22,973,000 $ 2,880,609,000 [2] $ 2,762,964,000 [2]   $ 23,200,000 $ 14,600,000
[1] These amounts represent in aggregate the approximate $500.0 million of borrowings outstanding under our unsecured term loan facility. Certain amounts included in the 2015 tranche are in the form of Canadian dollar borrowings.
[2] Excludes debt related to real estate assets classified as held for sale as of December 31, 2012 and 2011, respectively. The total mortgage debt for these properties as of December 31, 2012 and 2011 was $23.2 million and $14.6 million, respectively, and is included in accounts payable and other liabilities on our Consolidated Balance Sheets.