Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2020

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts [Text Block]

The Williams Companies, Inc.

Schedule II — Valuation and Qualifying Accounts

			Additions
	Beginning Balance		Charged (Credited) To Costs and Expenses		Other		Deductions		Ending Balance
	(Millions)
2020
Deferred tax asset valuation allowance (1)	$	319	$	6	$	—	$	—	$	325
2019
Deferred tax asset valuation allowance (1)	320		(1)		—		—		319
2018
Deferred tax asset valuation allowance (1)	224		96		—		—		320

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(1)    Deducted from related assets.