| Date | Acquired | Amount |
|---|---|---|
| May 26, 2016 |
|
$ 200,000,000 |
| Mar 30, 2016 |
|
$ 3,800,000,000 |
| Feb 26, 2016 |
|
$ 600,000,000 |
| Jan 01, 2007 |
|
Undisclosed amount |
