Recent Accounting Guidance Revenue ASU - Income Statement Impact (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales	$ 8,545	$ 15,244
Sundry income (expense) - net	194	241
Income from continuing operations before income taxes	655	466
Provision for income taxes on continuing operations	141	168
Income from continuing operations after income taxes	514	298
Effect of Adoption of ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales	(49)	(72)
Sundry income (expense) - net	31	37
Income from continuing operations before income taxes	(18)	(35)
Provision for income taxes on continuing operations	(4)	(8)
Income from continuing operations after income taxes	(14)	(27)
Balance without Adoption of ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales	8,496	15,172
Sundry income (expense) - net	225	278
Income from continuing operations before income taxes	637	431
Provision for income taxes on continuing operations	137	160
Income from continuing operations after income taxes	$ 500	$ 271