Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

(MILLIONS OF DOLLARS, EXCEPT PER COMMON SHARE DATA)	FIRST			SECOND			THIRD		FOURTH
2019
Revenue	$	1,455		$	1,547		$	1,584	$	1,674
Costs and expenses	1,069			1,070			1,050		1,219
Restructuring charges and certain acquisition-related costs	5			22			6		18
Income before provision for taxes on income	381			455			528		437
Provision for taxes on income	69			84			95		53
Net income before allocation to noncontrolling interests	312			371			433		384
Net loss attributable to noncontrolling interests	—			—			—		—
Net income attributable to Zoetis	$	312		$	371		$	433	$	384
Earnings per common share--basic	$	0.65		$	0.77		$	0.91	$	0.81
Earnings per common share--diluted	$	0.65		$	0.77		$	0.90	$	0.80
2018
Revenue	$	1,366		$	1,415		$	1,480	$	1,564
Costs and expenses	947			973			1,015		1,132
Restructuring (reversals)/charges and certain acquisition-related costs	2			5			47		14
Income before provision for taxes on income	417			437			418		418
Provision for taxes on income	67			55			71		73
Net income before allocation to noncontrolling interests	350			382			347		345
Net loss attributable to noncontrolling interests	(2		)	(2		)	—		—
Net income attributable to Zoetis	$	352		$	384		$	347	$	345
Earnings per common share--basic	$	0.72		$	0.79		$	0.72	$	0.72
Earnings per common share--diluted	$	0.72		$	0.79		$	0.71	$	0.71