RESTRUCTURING - Schedule of Restructuring Charges Incurred (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 7	$ 12	$ 22	$ 121
Restructuring and Related Cost, Cost Incurred to Date	165		165
North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1)	7	0	47
Restructuring and Related Cost, Cost Incurred to Date	65		65
Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8	5	22	74
Restructuring and Related Cost, Cost Incurred to Date	100		100
Employee Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3	4	10	41
Restructuring and Related Cost, Cost Incurred to Date	55		55
Asset related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	1	8	9
Restructuring and Related Cost, Cost Incurred to Date	31		31
Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0	0	60
Restructuring and Related Cost, Cost Incurred to Date	60		60
Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	$ 7	4	$ 11
Restructuring and Related Cost, Cost Incurred to Date	$ 19		$ 19

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

KELLANOVA 10-Q