| May 11, 2017 |
|
£ 300,000,000 |
| Jun 21, 2016 |
|
Undisclosed amount |
| Mar 17, 2016 |
|
$ 270,000,000 |
| Dec 08, 2014 |
|
Undisclosed amount |
| Oct 15, 2012 |
|
Undisclosed amount |
| Dec 09, 2011 |
|
Undisclosed amount |
| Oct 31, 2011 |
|
Undisclosed amount |
| Mar 23, 2007 |
|
Undisclosed amount |
| Mar 13, 2007 |
|
Undisclosed amount |