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Organization and Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Revenue Recognized from Contract Liability The table below shows revenue that we recognized as a result of changes in the contract liability balances in the periods shown.
Three Months Ended
September 30,
Nine Months Ended
September 30,
(In millions)2020201920202019
Revenue recognized in the period from:
Amounts included in contract liabilities at the beginning of the period$1.0 $2.9 $1.8 $2.6 
Schedule of Basic and Diluted Net Income per Share
The following table sets forth the computation of basic and diluted net income per share for the periods shown.
Three Months Ended
September 30,
Nine Months Ended
September 30,
(In millions)2020201920202019
Net income$72.2 $45.8 $138.4 $8.4 
Net income per common share
Basic$0.75 $0.50 $1.48 $0.09 
Diluted$0.73 $0.50 $1.43 $0.09 
Basic weighted average shares outstanding95.8 91.3 93.8 90.9 
Dilutive potential common stock outstanding:
Restricted stock units1.0 1.2 1.1 1.3 
Warrants2.7 — 2.0 — 
Senior convertible notes— — — — 
Diluted weighted average shares outstanding99.5 92.5 96.9 92.2 
Schedule of Outstanding Anti-dilutive Securities Excluded from Diluted Net Income per Share
Outstanding anti-dilutive securities not included in the diluted net income per share attributable to common stockholders calculations were as follows:
Three Months Ended
September 30,
Nine Months Ended
September 30,
(In millions)2020201920202019
Restricted stock units— — — 0.3 
Warrants— 5.2 — 5.2 
Senior convertible notes7.2 9.2 8.8 9.2 
Total7.2 14.4 8.8 14.7