Minimum Future Rentals to be Received under Remaining Non-Cancelable Term of Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]  
Remainder of 2014 $ 407,977
2015 535,137
2016 520,326
2017 505,289
2018 489,417
Thereafter 3,377,651
Total future minimum rentals $ 5,835,797