| Jul 17, 2017 |
|
Undisclosed amount |
| Mar 29, 2017 |
|
Undisclosed amount |
| Jul 21, 2016 |
|
$ 1,140,000,000 |
| Apr 27, 2015 |
|
$ 600,000,000 |
| Nov 06, 2014 |
|
Undisclosed amount |
| Apr 17, 2014 |
|
Undisclosed amount |
| Feb 24, 2014 |
|
Undisclosed amount |
| Jan 10, 2014 |
|
Undisclosed amount |
| Sep 06, 2012 |
|
Undisclosed amount |
| Aug 20, 2010 |
|
$ 520,000,000 |
| Jan 05, 2009 |
|
$ 100,000,000 |