CONDENSED CONSOLIDATED STATEMENT OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Preferred Stock	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	Redeemable Preferred Stock [Member] Preferred Stock
Preferred Stock, Shares Issued										(0.7)
Preferred Stock, Value, Issued										$ (186)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Attributable to Parent			$ 24	$ 4,076	$ 50,472	$ (13,319)	$ (29,185)
Stockholders' Equity Attributable to Noncontrolling Interest									$ 107
Redemptions, shares										0.0
Redemptions										$ (3)
Balance, beginning of year, shares at Dec. 26, 2015			1,448.0
Balance, end of year, shares at Sep. 03, 2016			1,436.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense				193
Stock option exercises, RSUs, PSUs and PEPunits converted				(148)			$ 646
Adjustments Related to Tax Withholding for Share-based Compensation				(114)
Other				(6)
Shares issued, beginning of year at Dec. 26, 2015							(418.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(12.0)				(21.0)
Stock Repurchased During Period, Value							$ (2,112)
Stock option exercises, shares							9.0
Other (in shares)							0.0
Other							$ 5
Net income attributable to PepsiCo	$ 4,928				4,928
Cash dividends declared - common					(3,200)
Shares issued, end of period at Sep. 03, 2016							(430.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests	34								34
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(25)
Balance, end of period at Sep. 03, 2016	12,718
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						490
Stock option exercises/RSUs converted, tax benefits	86
Preferred Stock, Shares Issued		0.8								(0.7)
Preferred Stock, Value, Issued		$ 41								$ (189)
Stockholders' Equity Attributable to Parent			$ 24	4,001	52,200	(12,829)	$ (30,646)	$ 12,750
Stockholders' Equity Attributable to Noncontrolling Interest									116
Preferred Stock, Shares Issued										(0.7)
Preferred Stock, Value, Issued	41									$ (192)
Stockholders' Equity Attributable to Parent	11,246		$ 24	4,091	52,518	(13,919)	(31,468)
Stockholders' Equity Attributable to Noncontrolling Interest	104								104
Redemptions, shares										0.0
Redemptions										$ (4)
Balance, beginning of year, shares at Dec. 31, 2016			1,428.0
Balance, end of year, shares at Sep. 09, 2017			1,423.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense				209
Stock option exercises, RSUs, PSUs and PEPunits converted				(221)			$ 620
Adjustments Related to Tax Withholding for Share-based Compensation				(131)
Other				(4)
Shares issued, beginning of year at Dec. 31, 2016							(438.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares			(5.0)				(13.0)
Stock Repurchased During Period, Value							$ (1,495)
Stock option exercises, shares							8.0
Other (in shares)							0.0
Other							$ 2
Net income attributable to PepsiCo	5,567				5,567
Cash dividends declared - common					(3,387)
Shares issued, end of period at Sep. 09, 2017							(443.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests	36								36
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders									(25)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax									1
Balance, beginning of year at Dec. 31, 2016	11,199
Balance, end of period at Sep. 09, 2017	13,411
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						1,044
Preferred Stock, Shares Issued		0.8								(0.7)
Preferred Stock, Value, Issued	41	$ 41								$ (196)
Stockholders' Equity Attributable to Parent	13,450		$ 24	$ 3,944	$ 54,698	$ (12,875)	$ (32,341)	$ 13,450
Stockholders' Equity Attributable to Noncontrolling Interest	$ 116								$ 116