Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2013

Stockholders' Equity Note [Abstract]

Changes in Stockholders Equity

In millions	SunEdison Stockholders’ Equity			Noncontrolling Interest			Total Stockholders' Equity			Redeemable Noncontrolling Interest
Balance, January 1, 2013	$	575.3		$	90.8		$	666.1		$	11.3
Net loss	(300.3		)	(6.4		)	(306.7		)	(3.2		)
Translation adjustment, net	(40.9		)	2.2			(38.7		)	—
Adjustment of redeemable noncontrolling interest	(6.8		)	—			(6.8		)	6.8
Reclassification of redeemable noncontrolling interest to liability	—			—			—			(14.9		)
Other comprehensive loss, net of tax	(3.0		)	—			(3.0		)	—
Stock plans, net	22.4			—			22.4			—
Issuance of common stock	239.6			—			239.6			—
Deconsolidation of entities	0.1			(6.2		)	(6.1		)	—
SunEdison - contributions from partner	0.6			16.1			16.7			—
Balance, September 30, 2013	$	487.0		$	96.5		$	583.5		$	—

Outstanding Stock Options

	Shares		Weighted- Average Exercise Price		Aggregate  Intrinsic Value (in millions)		Weighted- Average Remaining Contractual Life (in years)
Outstanding at December 31, 2012	21,411,119		$	6.12
Granted	5,778,183		8.74
Exercised	(183,102	)	3.02
Forfeited	(2,550,469	)	5.66
Expired	(431,628	)	20.01
Outstanding at September 30, 2013	24,024,103		$	6.57	$	73.5	8
Options exercisable at September 30, 2013	4,546,599		$	12.27	$	6.6	6

Outstanding Restricted Stock Units

	Restricted  Stock Units		Aggregate  Intrinsic Value (in millions)		Weighted- Average  Remaining Contractual Life (in years)
Outstanding at December 31, 2012	4,401,768
Granted	1,304,560
Converted	(852,204	)
Forfeited	(641,828	)
Outstanding at September 30, 2013	4,212,296		$	35.8	2