Notes Payable (Tables)

12 Months Ended

Dec. 31, 2011

Notes Payable [Abstract]

Schedule of senior unsecured notes payable

Our senior unsecured notes and bonds consisted of the following, sorted by maturity date (dollars in millions):

December 31,	2011		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

Maturity of notes and bonds payable

The following table summarizes the maturity of our notes and bonds payable as of December 31, 2011 (dollars in millions):

Year of Maturity	Notes and Bonds
2012	$	--
2013		100
2014		--
2015		150
2016		275
Thereafter		1,225
Totals	$	1,750