Restructuring and Related Implementation Charges - Schedule of Restructuring Charges Incurred, by Segment (Details) - Strategic Growth and Productivity Program	3 Months Ended	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2026
Restructuring Cost and Reserve [Line Items]
Total charges incurred (percent)	100.00%	100.00%
Program-to-date Accumulated Charges (percent)	100.00%	100.00%
Hill's Pet Nutrition
Restructuring Cost and Reserve [Line Items]
Total charges incurred (percent)	21.00%	21.00%
Program-to-date Accumulated Charges (percent)	20.00%	20.00%
Corporate
Restructuring Cost and Reserve [Line Items]
Total charges incurred (percent)	16.00%	27.00%
Program-to-date Accumulated Charges (percent)	29.00%	29.00%
North America
Restructuring Cost and Reserve [Line Items]
Total charges incurred (percent)	5.00%	10.00%
Program-to-date Accumulated Charges (percent)	10.00%	10.00%
Latin America
Restructuring Cost and Reserve [Line Items]
Total charges incurred (percent)	35.00%	15.00%
Program-to-date Accumulated Charges (percent)	14.00%	14.00%
Europe, Middle East & Africa
Restructuring Cost and Reserve [Line Items]
Total charges incurred (percent)	20.00%	25.00%
Program-to-date Accumulated Charges (percent)	25.00%	25.00%
Asia Pacific
Restructuring Cost and Reserve [Line Items]
Total charges incurred (percent)	3.00%	2.00%
Program-to-date Accumulated Charges (percent)	2.00%	2.00%