| Date | Acquired | Amount |
|---|---|---|
| Jun 27, 2016 |
|
$ 1,100,000,000 |
| Jun 07, 2016 |
|
Undisclosed amount |
| May 18, 2016 |
|
$ 350,000,000 |
| Feb 02, 2016 |
|
Undisclosed amount |
| Nov 18, 2015 |
|
$ 110,000,000 |
| Oct 01, 2015 |
|
$ 100,000,000 |
| Sep 01, 2015 |
|
$ 150,000,000 |
| Aug 25, 2015 |
|
$ 458,000,000 |
| Jul 13, 2015 |
|
$ 235,000,000 |
| Jun 20, 2015 |
|
$ 93,000,000 |
| Jun 19, 2015 |
|
$ 110,000,000 |
| Apr 02, 2015 |
|
Undisclosed amount |
| Mar 26, 2015 |
|
Undisclosed amount |
| Feb 24, 2015 |
|
Undisclosed amount |
| Aug 27, 2014 |
|
$ 350,000,000 |
| Aug 26, 2014 |
|
$ 200,000,000 |
| Jul 28, 2014 |
|
$ 105,000,000 |
| Jun 15, 2014 |
|
$ 49,900,000,000 |
| May 20, 2014 |
|
$ 150,000,000 |
| Jan 06, 2014 |
|
$ 160,000,000 |
| Aug 12, 2013 |
|
Undisclosed amount |
| Nov 01, 2012 |
|
Undisclosed amount |
| Jul 07, 2011 |
|
$ 525,000,000 |
| Jul 07, 2011 |
|
$ 120,000,000 |
| Nov 23, 2010 |
|
$ 800,000,000 |
| Nov 16, 2010 |
|
Undisclosed amount |
| Jun 02, 2010 |
|
Undisclosed amount |
| Apr 29, 2010 |
|
$ 370,000,000 |
| Feb 25, 2010 |
|
Undisclosed amount |
| Jan 25, 2010 |
|
Undisclosed amount |
| Jan 25, 2010 |
|
Undisclosed amount |
| Jan 25, 2010 |
|
Undisclosed amount |
| Jun 02, 2009 |
|
Undisclosed amount |
| Apr 10, 2009 |
|
$ 700,000,000 |
| Feb 23, 2009 |
|
$ 325,000,000 |
| Nov 13, 2008 |
|
$ 355,000,000 |
| Apr 23, 2008 |
|
$ 29,000,000 |
| Apr 15, 2008 |
|
$ 42,000,000 |
| Nov 01, 2007 |
|
$ 20,000,000 |
| Jul 27, 2007 |
|
$ 3,900,000,000 |
| Jun 25, 2007 |
|
$ 26,000,000 |
| Aug 01, 2006 |
|
$ 9,000,000 |
| Aug 30, 2005 |
|
$ 65,099,999 |
| Jun 29, 2005 |
|
$ 268,700,000 |
| Sep 01, 2004 |
|
$ 65,099,999 |
| Jan 04, 2002 |
|
Undisclosed amount |
| May 31, 2001 |
|
$ 3,700,000,000 |
| Aug 27, 1999 |
|
$ 800,000,000 |
