Minimum Future Rentals to be Received under Remaining Non-Cancelable Term of Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]  
Remainder of 2014 $ 282,376
2015 557,731
2016 540,709
2017 525,579
2018 510,083
Thereafter 3,669,882
Total future minimum rentals $ 6,086,360