| Date | Acquired | Amount |
|---|---|---|
| Jul 05, 2017 |
|
$ 9,950,000,000 |
| Apr 25, 2017 |
|
Undisclosed amount |
| Nov 10, 2016 |
|
$ 425,000,000 |
| May 12, 2014 |
|
$ 1,650,000,000 |
| Jul 25, 2013 |
|
Undisclosed amount |
| Oct 31, 2012 |
|
Undisclosed amount |
| Jul 07, 2011 |
|
Undisclosed amount |
