CONSOLIDATED AND SECTOR BALANCE SHEET (Parenthetical) - USD ($) shares in Millions, $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Common Stock [Member]
EQUITY
Common Stock, par value (in dollars per share)	$ 0.01
Common Stock, shares issued (in shares)	3,960
Common Stock, Shares Authorized (in shares)	6,000
Class B Stock [Member]
EQUITY
Common Stock, par value (in dollars per share)	$ 0.01
Common Stock, shares issued (in shares)	71
Common Stock, Shares Authorized (in shares)	530
Automotive [Member]
ASSETS
Allowance for receivables	$ 387	$ 455