Asset Retirement Obligations (Notes)

6 Months Ended

Jun. 30, 2013

Asset Retirement Obligation [Abstract]

ASSET RETIREMENT OBLIGATIONS

ASSET RETIREMENT OBLIGATIONS

A reconciliation of the asset retirement obligations for the six months ended June 30, 2013 follows:

	(In millions)
Asset retirement obligations at December 31, 2012	$	1,557
Accretion	48
Revision in estimated cash flows	13
Asset retirement obligations at June 30, 2013	$	1,618