Notes Payable (Tables)

9 Months Ended

Sep. 30, 2011

Notes Payable [Abstract]

Schedule of senior unsecured notes payable

Our senior unsecured notes consisted of the following at September 30, 2011 and December 31, 2010, sorted by maturity date (dollars in millions):

	September 30,    2011		December 31,     2010
5.375% notes, issued in March 2003 and due in March 2013	$	100	$	100
5.5% notes, issued in November 2003 and due in November 2015		150		150
5.95% notes, issued in September 2006 and due in September 2016		275		275
5.375% notes, issued in September 2005 and due in September 2017		175		175
6.75% notes, issued in September 2007 and due in August 2019		550		550
5.75% notes, issued in June 2010 and due in January 2021		250		250
5.875% bonds, $100 issued in March 2005 and $150 issued in June 2011, both due in March 2035		250		100
	$	1,750	$	1,600