| Date | Acquired | Amount |
|---|---|---|
| Sep 27, 2017 |
|
Undisclosed amount |
| Sep 26, 2017 |
|
Undisclosed amount |
| Apr 05, 2016 |
|
$ 266,000,000 |
| Nov 05, 2015 |
|
$ 4,400,000,000 |
