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Earnings Per Share and Equity (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Schedule of Net Income Per Share

Calculations of net income per common share attributable to ON Semiconductor Corporation are as follows (in millions, except per share data):

						Year ended December 31,
						2019						2018						2017
Net income attributable to ON Semiconductor Corporation						$	211.7					$	627.4					$	810.7
Basic weighted average common shares outstanding						410.9						423.8						421.9
Add: Incremental shares for:
Dilutive effect of share-based awards						1.9						4.3						5.5
Dilutive effect of convertible notes						3.2						7.8						0.9
Diluted weighted average common shares outstanding						416.0						435.9						428.3
Net income per common share attributable to ON Semiconductor Corporation:
Basic						$	0.52					$	1.48					$	1.92
Diluted						$	0.51					$	1.44					$	1.89

Schedule of Share Repurchase Program

Information relating to the Company's 2018 and 2014 Share Repurchase Programs is as follows (in millions, except per share data):

						Year ended December 31,
						2019						2018						2017
Number of repurchased shares (1)						7.8						16.8						1.6
Aggregate purchase price						$	138.9					$	315.0					$	25.0
Fees, commissions and other expenses						0.1						0.3						—
Total cash used for share repurchases						$	139.0					$	315.3					$	25.0
Weighted-average purchase price per share						$	17.89					$	18.78					$	15.35
Available for future purchases at period end						$	1,361.1					$	1,500.0					$	603.2

_______________________

(1) None of these shares had been reissued or retired as of December 31, 2019, but may be reissued or retired by the Company at a later date.

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