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]
Cumulative Effect of Accounting Changes in Period of Adoption					$ 8
Stockholders' Equity Attributable to Noncontrolling Interest									$ 84
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			$ 23		59,947	$ (15,119)
Treasury Stock, Value							$ (34,286)
Common Stocks, Including Additional Paid in Capital				$ 3,953
Acquisitions And Divestitures To Noncontrolling Interest									0
Common Stock, Dividends, Per Share, Declared		$ 2.8375
Balance, beginning of year, shares at Dec. 29, 2018			1,409
Balance, end of year, shares at Sep. 07, 2019			1,396
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense				170
Stock option exercises, RSUs and PSUs converted				(181)			$ 463
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				(100)
Shares issued, beginning of year at Dec. 29, 2018							(458)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(13)				(19)
Treasury Stock, Value, Acquired, Cost Method			$ 0
Stock Repurchased During Period, Value							$ (2,301)
Stock option exercises, shares							6
Other									(1)
Net income attributable to PepsiCo		$ 5,548			5,548
Cash dividends declared - common	[1]				(3,989)
Shares issued, end of period at Sep. 07, 2019							(471)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		$ 27							27
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						(7)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(15)
Stockholders' Equity Attributable to Noncontrolling Interest									85
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			$ 23		60,752	(14,984)
Treasury Stock, Value							$ (35,635)
Common Stocks, Including Additional Paid in Capital				3,796
Acquisitions And Divestitures To Noncontrolling Interest									0
Common Stock, Dividends, Per Share, Declared		$ 0.955
Balance, beginning of year, shares at Jun. 15, 2019			1,399
Balance, end of year, shares at Sep. 07, 2019			1,396
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense				51
Stock option exercises, RSUs and PSUs converted				(5)			$ 62
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				0
Shares issued, beginning of year at Jun. 15, 2019							(468)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(3)				(4)
Treasury Stock, Value, Acquired, Cost Method			$ 0
Stock Repurchased During Period, Value							$ (551)
Stock option exercises, shares							1
Other									0
Net income attributable to PepsiCo		$ 2,100			2,100
Cash dividends declared - common	[1]				(1,338)
Shares issued, end of period at Sep. 07, 2019							(471)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests		10							10
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						(142)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									0
Cumulative Effect of Accounting Changes in Period of Adoption					0
Stockholders' Equity Attributable to Noncontrolling Interest									95
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		14,224	23		61,514	(15,126)		$ 14,129
Treasury Stock, Value							$ (36,124)
Common Stocks, Including Additional Paid in Capital				3,842
Cumulative Effect of Accounting Changes in Period of Adoption					(34)
Stockholders' Equity Attributable to Noncontrolling Interest		82							82
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		14,868	$ 23		61,946	(14,300)
Treasury Stock, Value		$ 36,769					(36,769)
Common Stocks, Including Additional Paid in Capital				3,886
Acquisitions And Divestitures To Noncontrolling Interest									5
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]
Share-based compensation expense				186
Stock option exercises, RSUs and PSUs converted				(138)			$ 284
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				(86)
Shares issued, beginning of year at Dec. 28, 2019							(476)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(8)				(12)
Treasury Stock, Value, Acquired, Cost Method			$ 0
Stock Repurchased During Period, Value							$ (1,559)
Stock option exercises, shares							4
Other									(1)
Net income attributable to PepsiCo		$ 5,275			5,275
Cash dividends declared - common	[1]				(4,174)
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
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						(1,057)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(15)
Stockholders' Equity Attributable to Noncontrolling Interest									96
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			$ 23		62,145	(15,778)
Treasury Stock, Value							$ (37,671)
Common Stocks, Including Additional Paid in Capital				3,772
Acquisitions And Divestitures To Noncontrolling Interest									0
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]
Share-based compensation expense				85
Stock option exercises, RSUs and PSUs converted				(2)			$ 27
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				(7)
Shares issued, beginning of year at Jun. 13, 2020							(482)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(2)				(3)
Treasury Stock, Value, Acquired, Cost Method			$ 0
Stock Repurchased During Period, Value							$ (400)
Stock option exercises, shares							1
Other									0
Net income attributable to PepsiCo		$ 2,291			2,291
Cash dividends declared - common	[1]				(1,423)
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
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						421
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									0
Cumulative Effect of Accounting Changes in Period of Adoption					0
Stockholders' Equity Attributable to Noncontrolling Interest		112							$ 112
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		13,595	$ 23		$ 63,013	$ (15,357)		$ 13,483
Treasury Stock, Value		$ 38,044					$ (38,044)
Common Stocks, Including Additional Paid in Capital				$ 3,848

[1] Cash dividends declared per common share were $1.0225 and $0.955 for the 12 weeks ended September 5, 2020 and September 7, 2019, respectively, and $3.00 and $2.8375 for the 36 weeks ended September 5, 2020 and September 7, 2019, respectively.