Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Current Assets
Allowance for Doubtful Accounts Receivable, Current	$ 59	$ 54
Shareholders’ Equity
Common Stock, Par Value (in dollars per share)	$ 1	$ 1
Common Stock, Shares Authorized (in shares)	2,000,000,000	2,000,000,000
Common Stock, Shares Issued (in shares)	1,465,706,360	1,465,706,360