Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Millions, except Share data	Oct. 02, 2011	Jan. 02, 2011
Current assets:
Allowances for doubtful accounts	$ 315	$ 340
Shareholders' equity:
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	4,320,000,000	4,320,000,000
Common stock, shares issued	3,119,843,000	3,119,843,000
Treasury stock, shares	387,592,000	381,746,000