CONDENSED CONSOLIDATED STATEMENT OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Preferred Stock	Preferred Stock Redeemable Preferred Stock [Member]	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
Preferred Stock, Shares Issued		0.8	(0.7)
Preferred Stock, Value, Issued		$ 41	$ (197)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Attributable to Parent				$ 24	$ 3,996	$ 52,839	$ (13,057)	$ (32,757)
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets						(145)
Stockholders' Equity Attributable to Noncontrolling Interest										$ 92
Common Stock, Dividends, Per Share, Declared	$ 0.805
Conversion of Stock, Shares Converted		(0.1)
Retirement of preferred stock		(0.7)	0.7
Convertible Preferred Stock Converted to Other Securities		$ (6)		$ 0	6
Retirement of preferred stock, value		$ (35)	$ 199			(164)
Redemptions, shares			0.0
Redemptions			$ (2)
Balance, beginning of year, shares at Dec. 30, 2017				1,420.0
Balance, end of year, shares at Mar. 24, 2018				1,419.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense					83
Stock option exercises, RSUs, PSUs and PEPunits converted					(142)			$ 261
Adjustments Related to Tax Withholding for Share-based Compensation					(76)
Other					(1)
Shares issued, beginning of year at Dec. 30, 2017								(446.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares				(2.0)				(5.0)
Treasury Stock, Value, Acquired, Cost Method				$ 0
Stock Repurchased During Period, Value								$ (521)
Stock option exercises, shares								3.0
Other (in shares)								0.0
Other								$ 1
Net income attributable to PepsiCo	$ 1,343					1,343
Cash dividends declared - common						(1,147)
Shares issued, end of period at Mar. 24, 2018								(448.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Noncontrolling Interest	10									10
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent							340
Stock Issued During Period, Shares, Conversion of Convertible Securities				1.0
Preferred Stock, Shares Issued		0.0	0.0
Preferred Stock, Value, Issued		$ 0	$ 0
Stockholders' Equity Attributable to Parent				$ 24	3,866	52,726	(12,717)	$ (33,016)	$ 10,883
Stockholders' Equity Attributable to Noncontrolling Interest										102
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	10,985
Preferred Stock, Shares Issued		0.0	0.0
Preferred Stock, Value, Issued		$ 0	$ 0
Stockholders' Equity Attributable to Parent	14,518			23	3,953	59,947	(15,119)	(34,286)
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets						8
Stockholders' Equity Attributable to Noncontrolling Interest	84									84
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 14,602
Common Stock, Dividends, Per Share, Declared	$ 0.9275
Conversion of Stock, Shares Converted		0.0
Retirement of preferred stock		0.0	0.0
Convertible Preferred Stock Converted to Other Securities		$ 0		$ 0	0
Retirement of preferred stock, value		$ 0	$ 0			0
Redemptions, shares			0.0
Redemptions			$ 0
Balance, beginning of year, shares at Dec. 29, 2018				1,409.0
Balance, end of year, shares at Mar. 23, 2019				1,404.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense					57
Stock option exercises, RSUs, PSUs and PEPunits converted					(164)			$ 279
Adjustments Related to Tax Withholding for Share-based Compensation					(93)
Other					0
Shares issued, beginning of year at Dec. 29, 2018								(458.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares				(5.0)				(9.0)
Treasury Stock, Value, Acquired, Cost Method				$ 0
Stock Repurchased During Period, Value								$ (971)
Stock option exercises, shares								4.0
Other (in shares)								0.0
Other								$ 0		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								(463.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Noncontrolling Interest	9									9
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent							463
Stock Issued During Period, Shares, Conversion of Convertible Securities				0.0
Preferred Stock, Shares Issued		0.0	0.0
Preferred Stock, Value, Issued		$ 0	$ 0
Stockholders' Equity Attributable to Parent	14,202			$ 23	$ 3,753	$ 60,060	$ (14,656)	$ (34,978)	$ 14,202
Stockholders' Equity Attributable to Noncontrolling Interest	94									$ 94
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 14,296