| Date | Acquired | Amount |
|---|---|---|
| Jul 11, 2017 |
|
Undisclosed amount |
| Dec 01, 2014 |
|
Undisclosed amount |
| Sep 24, 2014 |
|
Undisclosed amount |
| Jan 01, 2014 |
|
Undisclosed amount |
| Aug 07, 2013 |
|
$ 95,000,000 |
| Sep 11, 2010 |
|
$ 151,000,000 |
| Jul 01, 2010 |
|
Undisclosed amount |
| Apr 01, 2010 |
|
Undisclosed amount |
| Aug 05, 2008 |
|
$ 700,000,000 |
| Mar 03, 2008 |
|
$ 100,000,000 |
| Aug 03, 2007 |
|
Undisclosed amount |
| Jul 02, 2007 |
|
Undisclosed amount |
| Jun 21, 2007 |
|
Undisclosed amount |
| Jan 01, 2007 |
|
$ 1,200,000,000 |
| Feb 16, 2005 |
|
$ 42,000,000 |
| Jan 01, 2005 |
|
Undisclosed amount |
| Sep 01, 2004 |
|
Undisclosed amount |
| Jan 01, 2003 |
|
Undisclosed amount |
