Business Combinations - Schedule of Unaudited Pro Forma Financial Information (Detail) - KTR Capital Partners and Affiliates [Member] $ / shares in Units, $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 31, 2015
USD ($)
$ / shares
| |
| Business Acquisition [Line Items] | |
| Total revenues | $ | $ 2,358,643 |
| Net earnings attributable to common stockholders | $ | $ 866,753 |
| Net earnings per share attributable to common stockholders – Basic | $ / shares | $ 1.66 |
| Net earnings per share attributable to common stockholders – Diluted | $ / shares | $ 1.65 |