CONDENSED CONSOLIDATED STATEMENT OF EQUITY - USD ($) shares in Millions, $ in Millions		Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Repurchased Common Stock	Total Common Shareholder's Equity	Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			$ 23		$ 61,946	$ (14,300)
Common Stocks, Including Additional Paid in Capital				$ 3,886
Cumulative Effect of Accounting Changes in Period of Adoption					(34)
Treasury Stock, Value							$ (36,769)
Noncontrolling interests									$ 82
Common Stock, Dividends, Per Share, Declared		$ 1.9775
Balance, beginning of year, shares at Dec. 28, 2019			1,391
Balance, end of year, shares at Jun. 13, 2020			1,385
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method			$ 0
Share-based compensation expense				101
Stock Issued During Period, Value, Stock Options Exercised				(136)			$ 257
Withholding tax on RSUs and PSUs converted				(79)
Net income attributable to PepsiCo		$ 2,984			2,984
Cash dividends declared - common	[1]				(2,751)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						(1,478)
Shares issued, beginning of year at Dec. 28, 2019							(476)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(6)				(9)
Stock option exercises, shares							3
Stock Repurchased During Period, Value							$ (1,159)
Shares issued, end of period at Jun. 13, 2020							(482)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		$ 25							25
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(15)
Acquisitions And Divestitures To Noncontrolling Interest									6
Other									(2)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			$ 23		61,920	(15,057)
Common Stocks, Including Additional Paid in Capital				3,741
Treasury Stock, Value							$ (37,162)
Noncontrolling interests									94
Common Stock, Dividends, Per Share, Declared		$ 1.0225
Balance, beginning of year, shares at Mar. 21, 2020			1,389
Balance, end of year, shares at Jun. 13, 2020			1,385
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method			$ 0
Share-based compensation expense				39
Stock Issued During Period, Value, Stock Options Exercised				(5)			$ 48
Withholding tax on RSUs and PSUs converted				(3)
Net income attributable to PepsiCo		$ 1,646			1,646
Cash dividends declared - common	[1]				(1,421)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						(721)
Shares issued, beginning of year at Mar. 21, 2020							(478)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(4)				(5)
Stock option exercises, shares							1
Stock Repurchased During Period, Value							$ (557)
Shares issued, end of period at Jun. 13, 2020							(482)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		12							12
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(15)
Acquisitions And Divestitures To Noncontrolling Interest									6
Other									(1)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		12,587	$ 23		62,145	(15,778)		$ 12,491
Common Stocks, Including Additional Paid in Capital				3,772
Cumulative Effect of Accounting Changes in Period of Adoption					0
Treasury Stock, Value							$ (37,671)
Noncontrolling interests									96
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		13,552	$ 23		63,443	(15,476)
Common Stocks, Including Additional Paid in Capital				3,910
Cumulative Effect of Accounting Changes in Period of Adoption					0
Treasury Stock, Value		38,446					(38,446)
Noncontrolling interests		$ 98							98
Common Stock, Dividends, Per Share, Declared		$ 2.0975
Balance, beginning of year, shares at Dec. 26, 2020			1,380
Balance, end of year, shares at Jun. 12, 2021			1,382
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method			$ 0
Share-based compensation expense				145
Stock Issued During Period, Value, Stock Options Exercised				(119)			$ 219
Withholding tax on RSUs and PSUs converted				(73)
Net income attributable to PepsiCo		$ 4,072			4,072
Cash dividends declared - common	[1]				(2,910)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						617
Shares issued, beginning of year at Dec. 26, 2020							(487)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			2				(1)
Stock option exercises, shares							3
Stock Repurchased During Period, Value							$ (106)
Shares issued, end of period at Jun. 12, 2021							(485)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		$ 23							23
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(20)
Acquisitions And Divestitures To Noncontrolling Interest									0
Other									(2)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			$ 23		63,740	(15,246)
Common Stocks, Including Additional Paid in Capital				3,800
Treasury Stock, Value							$ (38,370)
Noncontrolling interests									106
Common Stock, Dividends, Per Share, Declared		$ 1.075
Balance, beginning of year, shares at Mar. 20, 2021			1,382
Balance, end of year, shares at Jun. 12, 2021			1,382
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method			$ 0
Share-based compensation expense				65
Stock Issued During Period, Value, Stock Options Exercised				0			$ 37
Withholding tax on RSUs and PSUs converted				(2)
Net income attributable to PepsiCo		$ 2,358			2,358
Cash dividends declared - common	[1]				(1,493)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						387
Shares issued, beginning of year at Mar. 20, 2021							(485)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			0				0
Stock option exercises, shares							0
Stock Repurchased During Period, Value							$ 0
Shares issued, end of period at Jun. 12, 2021							(485)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		14							14
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(19)
Acquisitions And Divestitures To Noncontrolling Interest									0
Other									(2)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		15,398	$ 23		64,605	$ (14,859)		$ 15,299
Common Stocks, Including Additional Paid in Capital				$ 3,863
Cumulative Effect of Accounting Changes in Period of Adoption					$ 0
Treasury Stock, Value		38,333					$ (38,333)
Noncontrolling interests		$ 99							$ 99

[1] Cash dividends declared per common share were $1.075 and $1.0225 for the 12 weeks ended June 12, 2021 and June 13, 2020, respectively, and $2.0975 and $1.9775 for the 24 weeks ended June 12, 2021 and June 13, 2020, respectively.