TDCC Consolidated Balance Sheets Parentheticals - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Cash and cash equivalents (variable interest entities restricted - 2020: $44; 2019: $37)	$ 3,633	$ 2,367
Accounts Receivable, Allowance for Credit Loss, Current	43	45
Investments, Fair Value Disclosure	1,306	1,584
Net property (variable interest entities restricted - 2020: $286; 2019: $330)	20,806	20,996
Finite-Lived Intangible Assets, Accumulated Amortization	3,994	3,886
Long-term debt	$ 16,313	$ 15,975
Common Stock, Shares, Issued	753,534,116	751,228,644
Common Stock, Shares Authorized	5,000,000,000	5,000,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
The Dow Chemical Company [Domain]
Cash and cash equivalents (variable interest entities restricted - 2020: $44; 2019: $37)	$ 3,633	$ 2,367
Accounts Receivable, Allowance for Credit Loss, Current		45
Net property (variable interest entities restricted - 2020: $286; 2019: $330)	20,806	20,996
Finite-Lived Intangible Assets, Accumulated Amortization		3,886
Long-term debt	$ 16,313	$ 15,975
Common Stock, Shares, Issued	100	100
Common Stock, Shares Authorized	100	100
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents (variable interest entities restricted - 2020: $44; 2019: $37)	$ 44	$ 37
Net property (variable interest entities restricted - 2020: $286; 2019: $330)	286	330
Long-term debt	$ 30	$ 34