Debt - Schedule of Debt Maturities (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Scheduled Principal Payments For Borrowings [Line Items]    
Total debt, net $ 3,995,745 $ 4,323,302
Mortgages and Notes Payable    
Scheduled Principal Payments For Borrowings [Line Items]    
Remainder of 2015 109,178  
2016 301,229  
2017 825,779  
2018 286,834  
2019 516,520  
Thereafter 2,053,322  
Total debt, net 4,092,862  
Mortgages and Notes Payable | Scheduled Principal    
Scheduled Principal Payments For Borrowings [Line Items]    
Remainder of 2015 14,127  
2016 28,170  
2017 27,952  
2018 42,297  
2019 44,520  
Thereafter 289,321  
Total debt, net 446,387  
Mortgages and Notes Payable | Balloon Payment    
Scheduled Principal Payments For Borrowings [Line Items]    
Remainder of 2015 95,051  
2016 273,059  
2017 797,827  
2018 244,537  
2019 472,000  
Thereafter 1,764,001  
Total debt, net $ 3,646,475