| Sep 16, 2015 |
|
Undisclosed amount |
| Jan 22, 2014 |
|
Undisclosed amount |
| Jan 21, 2014 |
|
$ 35,000,000 |
| Sep 10, 2013 |
|
$ 200,000,000 |
| Jun 28, 2013 |
|
Undisclosed amount |
| May 22, 2013 |
|
Undisclosed amount |
| Feb 06, 2013 |
|
Undisclosed amount |
| Apr 17, 2012 |
|
£ 533,000,000 |
| Jul 29, 2011 |
|
Undisclosed amount |
| May 19, 2011 |
|
Undisclosed amount |
| Oct 20, 2006 |
|
Undisclosed amount |