Consolidated Balance Sheets Parenthetical (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current Assets [Abstract]
Allowance for Uncollectible Accounts	$ 23	$ 23
Allowance for Obsolescence	122	118
Property, Plant and Equipment [Abstract]
Accumulated Depreciation and Amortization	8,167	7,792
Other Assets [Abstract]
Accumulated Amortization	$ 753	$ 738
Stockholders' Equity
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	1,500,000,000	1,500,000,000
Common Stock, Shares, Issued	867,634,912	869,484,981
Treasury Stock, Shares	19,620,824	18,041,848