CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) AND COMPREHENSIVE INCOME (USD $) In Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Comprehensive Income
Balance at beginning of period at Dec. 31, 2008		$ 0.2	$ 6.3	$ (54.5)	$ (3.0)
Foreign currency translation adjustments					0.7
Deferred hedging gains					1.7
Deferred securities valuation gains					0.2
Net income	3.5			3.5		3.5
Other comprehensive income (loss)					2.6	2.6
Stock-based compensation			0.4
Total comprehensive income						6.1
Issuance of common stock			2.7
Other			(1.9)
Balance at end of period at Dec. 31, 2009		0.2	7.5	(51.0)	(0.4)
Foreign currency translation adjustments					0.2
Deferred hedging gains					0.6
Net income	11.5			11.5		11.5
Other comprehensive income (loss)					0.8	0.8
Stock-based compensation			1.2
Total comprehensive income						12.3
Issuance of common stock		0.2	221.0
Other			0.1
Balance at end of period at Dec. 31, 2010	191.1	0.4	229.8	(39.5)	0.4
Foreign currency translation adjustments					(0.2)
Deferred hedging gains					0.1
Net income	64.6			64.6		64.6
Other comprehensive income (loss)					(0.1)	(0.1)
Stock-based compensation			1.5
Total comprehensive income						64.5
Balance at end of period at Dec. 31, 2011	$ 257.1	$ 0.4	$ 231.3	$ 25.1	$ 0.3