Basis of Presentation (Unaudited) (Details 3) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
New Accounting Pronouncement, Early Adoption [Line Items]
Net earnings	$ 556	$ 484
Net Cash Provided by (Used in) Operating Activities	(60)	(654)
Net Cash Provided by (Used in) Financing Activities	(684)	$ (448)
New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Net earnings	80
Net Cash Provided by (Used in) Operating Activities	80
Net Cash Provided by (Used in) Financing Activities	$ (80)