Business Combinations (Schedule of Recognized Identified Assets Acquired and Liabilities Assumed) (Details) - Merger with Dow [Domain] $ in Millions	Aug. 31, 2017 USD ($)
Business Acquisition [Line Items]
Cash and Cash Equivalents	$ 4,005
Marketable Securities	2,849
Accounts and Notes Receivable - net	7,851
Inventories	8,886
Other Current Assets	360
Investment in Nonconsolidated Affiliates	1,685
Assets Held for Sale	3,184
Property, plant and equipment - net	12,122
Goodwill	45,501	[1]
Other Intangible Assets	27,844	[1]
Deferred Income Tax Assets	487
Other Assets	2,076
Total Assets	116,850
Short-term Borrowings and Capital Lease Obligations	5,319
Accounts Payable	3,283
Income Taxes Payable	140
Accrued and Other Current Liabilities	3,517
Liabilities Held for Sale	104
Long-term Debt	9,878
Deferred Tax Liabilities	9,408
Pension and Other Post Employment Benefits, Noncurrent	8,092	[2]
Other Noncurrent Obligations	2,028
Total Liabilities	41,769
Noncontrolling Interest	162
Preferred Stock	239
Fair Value of Net Assets (Consideration for the Merger)	$ 74,680

[1] See Note 11 for additional information.

[2] Includes pension and other post employment benefits as well as long-term disability obligations.