| Date | Acquired | Amount |
|---|---|---|
| Oct 04, 2017 |
|
Undisclosed amount |
| Sep 20, 2017 |
|
$ 631,000,000 |
| Jul 10, 2017 |
|
Undisclosed amount |
| Jun 29, 2017 |
|
Undisclosed amount |
| Apr 11, 2017 |
|
Undisclosed amount |
| Aug 31, 2016 |
|
$ 21,000,000 |
| Aug 01, 2014 |
|
$ 5,100,000,000 |
| Jan 31, 2013 |
|
$ 1,500,000,000 |
| Jun 11, 2012 |
|
Undisclosed amount |
| Apr 27, 2011 |
|
Undisclosed amount |
| Aug 05, 2010 |
|
Undisclosed amount |
| Apr 19, 2010 |
|
Undisclosed amount |
| May 01, 2007 |
|
$ 100,000,000 |
| Dec 22, 2006 |
|
Undisclosed amount |
| Apr 20, 2006 |
|
$ 183,000,000 |
| Apr 05, 2006 |
|
$ 12,000,000 |
| Jan 20, 2006 |
|
$ 60,000,000 |
| Oct 05, 2004 |
|
Undisclosed amount |
| Nov 07, 2003 |
|
$ 143,000,000 |
| Nov 19, 2002 |
|
$ 18,500,000 |
| Jun 06, 2002 |
|
$ 8,300,000 |
