Earnings (Loss) Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings (Loss) Per Share [Abstract]

Reconciliation of basic earnings (loss) per share to diluted earnings (loss) per share

						Weighted
						Average
	Net			Shares		Per-Share
(millions, except per-share and share data)	Loss			(000)		Amount
Three Months Ended June 30, 2011:
Basic loss	$	(70	)		103,551	$	(0.69	)
Diluted loss	$	(70	)		103,551	$	(0.69	)
Three Months Ended June 30, 2010:
Basic loss	$	(74	)		99,520	$	(0.74	)
Diluted loss	$	(74	)		99,520	$	(0.74	)
Six Months Ended June 30, 2011:
Basic loss	$	(175	)		103,286	$	(1.70	)
Diluted loss	$	(175	)		103,286	$	(1.70	)
Six Months Ended June 30, 2010:
Basic loss	$	(184	)		99,452	$	(1.85	)
Diluted loss	$	(184	)		99,452	$	(1.85	)