CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Operating Activities
Net income	$ 964	$ 962	$ 1,495
Adjustments to reconcile net income to operating cash flows
Depreciation, Depletion and Amortization	419	478	467
Postretirement benefit plan expense (benefit)	53	240	(392)
Deferred income taxes	(21)	(46)	125
Stock compensation	95	96	68
Loss on Russia Divestiture	113	0	0
Other	40	(42)	(44)
Postretirement benefit plan contributions	(42)	(23)	(20)
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables	(42)	(257)	(9)
Inventories	139	(411)	(135)
Accounts payable	(340)	411	194
All other current assets and liabilities	267	243	(48)
Net cash provided by (used in) operating activities	1,645	1,651	1,701
Investing activities
Additions to properties	(677)	(488)	(553)
Issuance of notes receivable	(4)	(22)	(28)
Repayments from notes receivable	0	10	28
Settlement of net investment hedges	68	37	19
Investments in unconsolidated entities	0	0	(10)
Purchases of available-for-sale securities	(15)	(17)	(61)
Sales of available-for-sale securities	64	19	72
Other	2	13	5
Net cash provided by (used in) investing activities	(562)	(448)	(528)
Financing activities
Net increase (reduction) of notes payable, with maturities less than or equal to 90 days	(356)	337	(27)
Issuances of notes payable, with maturities greater than 90 days	35	28	73
Reductions of notes payable, with maturities greater than 90 days	(25)	(35)	(63)
Issuances of long-term debt	404	39	361
Reductions of long-term debt	(780)	(648)	(650)
Net issuances of common stock	60	277	63
Common stock repurchases	(170)	(300)	(240)
Cash dividends	(800)	(797)	(788)
Distribution from WK Kellogg Co.	663	0	0
Cash retained by WK Kellogg Co at Separation	(78)	0	0
Other	(63)	18	(35)
Net cash provided by (used in) financing activities	(1,110)	(1,081)	(1,306)
Effect of exchange rate changes on cash and cash equivalents	2	(109)	(16)
Increase (decrease) in cash and cash equivalents	(25)	13	(149)
Cash and cash equivalents at beginning of period	299	286	435
Cash and cash equivalents at end of period	274	299	286
Supplemental cash flow disclosures:
Interest paid	291	220	213
Income taxes paid	322	312	365
Supplemental cash flow disclosures of non-cash investing activities:
Additions to properties included in accounts payable	$ 138	$ 209	$ 162