Discontinued Operations (Summarized Activity) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Earnings (loss) from discontinued operations, net of tax	$ 0	$ (30,000,000)	$ 1,996,000,000
Discontinued Operations, Disposed of by Sale | Enterprise
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net sales		0	1,904,000,000
Operating earnings		0	203,000,000
Gains (losses) on sales of investments and businesses, net		(24,000,000)	1,888,000,000
Earnings (loss) before income taxes		(24,000,000)	2,074,000,000
Income tax expense		6,000,000	78,000,000
Earnings (loss) from discontinued operations, net of tax		$ (30,000,000)	$ 1,996,000,000