| Date | Acquired | Amount |
|---|---|---|
| Sep 29, 2014 |
|
Undisclosed amount |
| Sep 26, 2011 |
|
£ 343,000,000 |
| Feb 21, 2008 |
|
$ 4,100,000,000 |
| Oct 05, 1994 |
|
$ 1,500,000,000 |
