| Date | Acquired | Amount |
|---|---|---|
| Oct 03, 2017 |
|
Undisclosed amount |
| Jul 28, 2017 |
|
$ 128,000,000 |
| Aug 02, 2016 |
|
$ 30,200,000 |
| Apr 21, 2016 |
|
Undisclosed amount |
| Mar 10, 2016 |
|
Undisclosed amount |
| Oct 14, 2015 |
|
Undisclosed amount |
| Apr 28, 2015 |
|
$ 2,600,000,000 |
| Jan 01, 2015 |
|
Undisclosed amount |
| Oct 18, 2013 |
|
Undisclosed amount |
| Sep 04, 2013 |
|
Undisclosed amount |
| Feb 22, 2010 |
|
$ 112,000,000 |
| May 01, 2008 |
|
Undisclosed amount |
| Oct 31, 2007 |
|
$ 158,000,000 |
| Jun 25, 2007 |
|
Undisclosed amount |
| Dec 01, 2005 |
|
Undisclosed amount |
| Oct 12, 2004 |
|
$ 117,000,000 |
