Shareowners' Equity (Other - Parenthetical) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Preferred Stock, Shares Issued	50,000		50,000		50,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01		$ 0.01
Quarterly dividend paid	$ 0	$ 472	$ 450	$ 1,555
Special Dividend Paid By Finance Subsidiary To Parent	$ 0	$ 333	$ 0	$ 666