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		$ 3.00
Balance, beginning of year, shares at Dec. 28, 2019			1,391
Balance, end of year, shares at Sep. 05, 2020			1,383
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method			$ 0
Share-based compensation expense				186
Stock Issued During Period, Value, Stock Options Exercised				(138)			$ 284
Withholding tax on RSUs and PSUs converted				(86)
Net income attributable to PepsiCo		$ 5,275			5,275
Cash dividends declared - common	[1]				(4,174)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						(1,057)
Shares issued, beginning of year at Dec. 28, 2019							(476)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(8)				(12)
Stock option exercises, shares							4
Stockholders' Equity, Other Shares			0
Stock Repurchased During Period, Value							$ (1,559)
Shares issued, end of period at Sep. 05, 2020							(484)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		$ 41							41
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(15)
Acquisitions And Divestitures To Noncontrolling Interest									5
Other			$ 0						(1)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			$ 23		62,145	(15,778)
Common Stocks, Including Additional Paid in Capital				3,772
Treasury Stock, Value							$ (37,671)
Noncontrolling interests									96
Common Stock, Dividends, Per Share, Declared		$ 1.0225
Balance, beginning of year, shares at Jun. 13, 2020			1,385
Balance, end of year, shares at Sep. 05, 2020			1,383
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method			$ 0
Share-based compensation expense				85
Stock Issued During Period, Value, Stock Options Exercised				(2)			$ 27
Withholding tax on RSUs and PSUs converted				(7)
Net income attributable to PepsiCo		$ 2,291			2,291
Cash dividends declared - common	[1]				(1,423)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						421
Shares issued, beginning of year at Jun. 13, 2020							(482)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(2)				(3)
Stock option exercises, shares							1
Stockholders' Equity, Other Shares			0
Stock Repurchased During Period, Value							$ (400)
Shares issued, end of period at Sep. 05, 2020							(484)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		16							16
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									0
Acquisitions And Divestitures To Noncontrolling Interest									0
Other			$ 0						0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		13,595	23		63,013	(15,357)		$ 13,483
Common Stocks, Including Additional Paid in Capital				3,848
Cumulative Effect of Accounting Changes in Period of Adoption					0
Treasury Stock, Value							$ (38,044)
Noncontrolling interests									112
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		$ 3.1725
Balance, beginning of year, shares at Dec. 26, 2020			1,380
Balance, end of year, shares at Sep. 04, 2021			1,383
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method			$ 0
Share-based compensation expense				215
Stock Issued During Period, Value, Stock Options Exercised				(119)			$ 265
Withholding tax on RSUs and PSUs converted				(82)
Net income attributable to PepsiCo		$ 6,296			6,296
Cash dividends declared - common	[1]				(4,403)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						351
Shares issued, beginning of year at Dec. 26, 2020							(487)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			3				(1)
Stock option exercises, shares							4
Stockholders' Equity, Other Shares			0
Stock Repurchased During Period, Value							$ (106)
Shares issued, end of period at Sep. 04, 2021							(484)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		$ 42							42
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(20)
Acquisitions And Divestitures To Noncontrolling Interest									0
Other			$ 1						(2)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			$ 23		64,605	(14,859)
Common Stocks, Including Additional Paid in Capital				3,863
Treasury Stock, Value							$ (38,333)
Noncontrolling interests									99
Common Stock, Dividends, Per Share, Declared		$ 1.075
Balance, beginning of year, shares at Jun. 12, 2021			1,382
Balance, end of year, shares at Sep. 04, 2021			1,383
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method			$ 0
Share-based compensation expense				70
Stock Issued During Period, Value, Stock Options Exercised				0			$ 46
Withholding tax on RSUs and PSUs converted				(9)
Net income attributable to PepsiCo		$ 2,224			2,224
Cash dividends declared - common	[1]				(1,493)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						(266)
Shares issued, beginning of year at Jun. 12, 2021							(485)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			1				0
Stock option exercises, shares							1
Stockholders' Equity, Other Shares			0
Stock Repurchased During Period, Value							$ 0
Shares issued, end of period at Sep. 04, 2021							(484)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		19							19
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									0
Acquisitions And Divestitures To Noncontrolling Interest									0
Other			$ 1						0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		15,990	$ 23		65,336	$ (15,125)		$ 15,872
Common Stocks, Including Additional Paid in Capital				$ 3,924
Cumulative Effect of Accounting Changes in Period of Adoption					$ 0
Treasury Stock, Value		38,286					$ (38,286)
Noncontrolling interests		$ 118							$ 118

[1] Cash dividends declared per common share were $1.075 and $1.0225 for the 12 weeks ended September 4, 2021 and September 5, 2020, respectively, and $3.1725 and $3.00 for the 36 weeks ended September 4, 2021 and September 5, 2020, respectively.