Long-Term Debt And Capital Lease Obligation (Tables)

12 Months Ended

Dec. 31, 2012

Long-Term Debt And Capital Lease Obligation [Abstract]

Book Value And Principal Amounts Of Long-Term Debt

(In millions)				Book value				Principal amount
				December 31,		December 31,		December 31,		December 31,
Interest rate	Year of issue			2012		2011		2012		2011
6.900%	1998	Senior debentures, due 2028	$	28	$	28	$	28	$	28
6.920%	2005	Senior debentures, due 2028		391		391		391		391
6.125%	2004	Senior notes, due 2034		371		371		374		374
		Total	$	790	$	790	$	793	$	793

Capital Lease Payments Over Next Five Years

(In millions)	Years ended December 31,
	2013		2014		2015		2016		2017
Capital lease obligations	$	17	$	10	$	7	$	3	$	0