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 Attributable to Parent		$ 23	$ 3,953	$ 59,947	$ (15,119)	$ (34,286)
Cumulative Effect of New Accounting Principle in Period of Adoption				8
Stockholders' Equity Attributable to Noncontrolling Interest								$ 84
Common Stock, Dividends, Per Share, Declared	$ 0.9275
Balance, beginning of year, shares at Dec. 29, 2018		1,409
Balance, end of year, shares at Mar. 23, 2019		1,404
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense			57
Stock option exercises, RSUs and PSUs converted			(164)			$ 279
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			(93)
Shares issued, beginning of year at Dec. 29, 2018						(458)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares		(5)				(9)
Treasury Stock, Value, Acquired, Cost Method		$ 0
Stock Repurchased During Period, Value						$ (971)
Stock option exercises, shares						4
Other								1
Net income attributable to PepsiCo	$ 1,413			1,413
Cash dividends declared - common				(1,308)
Shares issued, end of period at Mar. 23, 2019						(463)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests	9							9
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent					463
Stockholders' Equity Attributable to Parent		23	3,753	60,060	(14,656)	$ (34,978)	$ 14,202
Stockholders' Equity Attributable to Noncontrolling Interest								94
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	14,296
Stockholders' Equity Attributable to Parent	14,786	$ 23	3,886	61,946	(14,300)	(36,769)
Cumulative Effect of New Accounting Principle in Period of Adoption				(34)
Stockholders' Equity Attributable to Noncontrolling Interest	82							82
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 14,868
Common Stock, Dividends, Per Share, Declared	$ 0.955
Balance, beginning of year, shares at Dec. 28, 2019		1,391
Balance, end of year, shares at Mar. 21, 2020		1,389
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense			62
Stock option exercises, RSUs and PSUs converted			(131)			$ 209
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			(76)
Shares issued, beginning of year at Dec. 28, 2019						(476)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares		(2)				(4)
Treasury Stock, Value, Acquired, Cost Method		$ 0
Stock Repurchased During Period, Value						$ (602)
Stock option exercises, shares						2
Other								(1)
Net income attributable to PepsiCo	$ 1,338			1,338
Cash dividends declared - common				(1,330)
Shares issued, end of period at Mar. 21, 2020						(478)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income attributable to noncontrolling interests	13							13
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent					(757)
Stockholders' Equity Attributable to Parent	13,465	$ 23	$ 3,741	$ 61,920	$ (15,057)	$ (37,162)	$ 13,465
Stockholders' Equity Attributable to Noncontrolling Interest	94							$ 94
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 13,559