Accounts Payable and Accrued Liabilities

12 Months Ended

Dec. 31, 2011

Accounts Payable and Accrued Liabilities, Current [Abstract]

Accounts Payable and Accrued Liabilities

Note 10.Accrued Liabilities

	December 31,
	2011		2010
		(Millions)
Interest on debt	$	143	$	162
Employee costs		127		146
Asset retirement obligations		66		35
Income taxes		24		187
Other, including other loss contingencies		271		208
	$	631	$	738