Restructuring and Related Implementation Charges (Details 2) - Global Growth and Efficiency Program	3 Months Ended		9 Months Ended		60 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017
Hill’s Pet Nutrition
Restructuring Cost and Reserve [Line Items]
Percent of Total Restructuring Charges Related to Segment	9.00%	5.00%	5.00%	8.00%
Percent of Restructuring Charges Related to Segment, Program-to-date Accumulated Charges					7.00%
Corporate
Restructuring Cost and Reserve [Line Items]
Percent of Total Restructuring Charges Related to Segment	64.00%	27.00%	34.00%	25.00%
Percent of Restructuring Charges Related to Segment, Program-to-date Accumulated Charges					40.00%
North America
Restructuring Cost and Reserve [Line Items]
Percent of Total Restructuring Charges Related to Segment	27.00%	30.00%	23.00%	32.00%
Percent of Restructuring Charges Related to Segment, Program-to-date Accumulated Charges					18.00%
Latin America
Restructuring Cost and Reserve [Line Items]
Percent of Total Restructuring Charges Related to Segment	2.00%	3.00%	3.00%	5.00%
Percent of Restructuring Charges Related to Segment, Program-to-date Accumulated Charges					3.00%
Europe
Restructuring Cost and Reserve [Line Items]
Percent of Total Restructuring Charges Related to Segment	(11.00%)	19.00%	29.00%	10.00%
Percent of Restructuring Charges Related to Segment, Program-to-date Accumulated Charges					23.00%
Asia Pacific
Restructuring Cost and Reserve [Line Items]
Percent of Total Restructuring Charges Related to Segment	7.00%	4.00%	4.00%	6.00%
Percent of Restructuring Charges Related to Segment, Program-to-date Accumulated Charges					3.00%
Africa/Eurasia
Restructuring Cost and Reserve [Line Items]
Percent of Total Restructuring Charges Related to Segment	2.00%	12.00%	2.00%	14.00%
Percent of Restructuring Charges Related to Segment, Program-to-date Accumulated Charges					6.00%