| Date | Acquired | Amount |
|---|---|---|
| Jan 10, 2017 |
|
$ 600,000,000 |
| Oct 17, 2016 |
|
£ 420,000,000 |
| May 03, 2016 |
|
$ 12,500,000,000 |
| Nov 01, 2015 |
|
$ 1,000,000,000 |
| Oct 19, 2015 |
|
Undisclosed amount |
| Oct 07, 2014 |
|
$ 239,000,000 |
| May 22, 2013 |
|
Undisclosed amount |
| Dec 06, 2010 |
|
Undisclosed amount |
| Nov 29, 2010 |
|
Undisclosed amount |
| Nov 23, 2010 |
|
Undisclosed amount |
| Nov 12, 2010 |
|
Undisclosed amount |
| Dec 07, 2007 |
|
Undisclosed amount |
