Stock Plans (Tables)

6 Months Ended

Jun. 30, 2015

Stock Plans [Abstract]

LTIP Target Performance Shares

	Number of
	Shares
	(in thousands)
Balance at January 1, 2015	2,682
LTIP target performance shares granted	738
LTIP target performance shares earned	(743)
LTIP target performance shares forfeited	(152)
Balance at June 30, 2015	2,525

Restricted Shares Outstanding

		Weighted
		Average
	Number of	Grant Date		Aggregate
	Shares	Fair Value		Fair Value
	(in thousands)	(per share)		(in millions)
Balance at January 1, 2015	7,807	$	4.75	$	52
Restricted stock granted	2,763	$	7.98	$	14
Restricted stock vested	(3,197)	$	4.89	$	16
Restricted stock forfeited	(329)	$	5.04
Balance at June 30, 2015	7,044	$	5.94	$	35