Accrued Liabilities

12 Months Ended

Dec. 31, 2012

Accrued Liabilities [Abstract]

Accrued Liabilities

Note 11.Accrued Liabilities

	December 31,
	2012		2011
		(Millions)
Interest on debt	$	148	$	143
Employee costs		137		127
Asset retirement obligations		68		66
Other, including other loss contingencies		275		295
	$	628	$	631