Restructuring and Related Implementation Charges - Schedule of Restructuring Charges Incurred, by Segment (Details) - Global Productivity Initiative		3 Months Ended
	Jan. 27, 2022	Mar. 31, 2024	Mar. 31, 2023
Restructuring Cost and Reserve [Line Items]
Percent of total restructuring charges related to segment		100.00%	100.00%
Program-to-date Accumulated Charges		100.00%
Hill's Pet Nutrition
Restructuring Cost and Reserve [Line Items]
Percent of total restructuring charges related to segment	10.00%	14.00%	16.00%
Program-to-date Accumulated Charges		14.00%
Corporate
Restructuring Cost and Reserve [Line Items]
Percent of total restructuring charges related to segment	15.00%	0.00%	32.00%
Program-to-date Accumulated Charges		17.00%
North America
Restructuring Cost and Reserve [Line Items]
Percent of total restructuring charges related to segment	5.00%	0.00%	7.00%
Program-to-date Accumulated Charges		9.00%
Latin America
Restructuring Cost and Reserve [Line Items]
Percent of total restructuring charges related to segment	10.00%	0.00%	11.00%
Program-to-date Accumulated Charges		11.00%
Europe
Restructuring Cost and Reserve [Line Items]
Percent of total restructuring charges related to segment	45.00%	85.00%	15.00%
Program-to-date Accumulated Charges		32.00%
Asia Pacific
Restructuring Cost and Reserve [Line Items]
Percent of total restructuring charges related to segment	5.00%	0.00%	6.00%
Program-to-date Accumulated Charges		9.00%
Africa/Eurasia
Restructuring Cost and Reserve [Line Items]
Percent of total restructuring charges related to segment	10.00%	1.00%	13.00%
Program-to-date Accumulated Charges		8.00%