Charges and Credits - Summary of Charges and Credits (Detail) - USD ($) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2020
Charges And Credits [Line Items]
Charges and credits, Pretax Credit										$ (347)
Charges and credits, Tax Expense										(44)
Charges and credits, Net										$ (303)
Interest And Other
Charges And Credits [Line Items]
Charges and credits, Pretax Credit				$ (65)
Charges and credits, Tax Expense				(15)
Charges and credits, Net				(50)
Interest And Other | Gain On Sale Of Liberty Shares
Charges And Credits [Line Items]
Charges and credits, Pretax Credit	$ (84)	$ (215)	$ (26)	(28)
Charges and credits, Tax Expense	(19)	(14)	(4)	(4)
Charges and credits, Net	(65)	(201)	$ (22)	(24)
Interest And Other | Gain On Sale Of Real Estate
Charges And Credits [Line Items]
Charges and credits, Pretax Credit		(43)
Charges and credits, Tax Expense		(2)
Charges and credits, Net		$ (41)
Interest And Other | Loss On Blue Chip Swap Transactions
Charges And Credits [Line Items]
Charges and credits, Pretax Credit	139
Charges and credits, Net	139
Interest And Other | Gain On ADC Equity Investment
Charges And Credits [Line Items]
Charges and credits, Pretax Credit	(107)
Charges and credits, Tax Expense	(3)
Charges and credits, Net	(104)
Interest And Other | Gain On Repurchase Of Bonds
Charges And Credits [Line Items]
Charges and credits, Pretax Credit	(11)
Charges and credits, Tax Expense	(2)
Charges and credits, Net	$ (9)
Interest And Other | Early Repayment of Bonds
Charges And Credits [Line Items]
Charges and credits, Pretax Credit				10
Charges and credits, Net				$ 10
Interest And Other | Unrealized Gain On Available For Sale Marketable Securities
Charges And Credits [Line Items]
Charges and credits, Pretax Credit					$ (47)
Charges and credits, Tax Expense					(11)
Charges and credits, Net					$ (36)
Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax Credit											$ 12,515
Charges and credits, Tax Expense											1,041
Charges and credits, Net											$ 11,474
Impairment and Other | Unrealized Gain On Available For Sale Marketable Securities
Charges And Credits [Line Items]
Charges and credits, Pretax Credit						$ (39)
Charges and credits, Tax Expense						(9)
Charges and credits, Net						(30)
Impairment and Other | Goodwill
Charges And Credits [Line Items]
Charges and credits, Pretax Credit									$ 3,070
Charges and credits, Net									3,070
Impairment and Other | Intangible assets impairment
Charges And Credits [Line Items]
Charges and credits, Pretax Credit									3,321
Charges and credits, Tax Expense									815
Charges and credits, Net									2,506
Impairment and Other | Asset Performance Solutions Investments
Charges And Credits [Line Items]
Charges and credits, Pretax Credit								$ 730	1,264
Charges and credits, Tax Expense								15	(4)
Charges and credits, Net								715	1,268
Impairment and Other | North America pressure pumping asset impairments
Charges And Credits [Line Items]
Charges and credits, Pretax Credit									587
Charges and credits, Tax Expense									133
Charges and credits, Net									454
Impairment and Other | Workforce reductions
Charges And Credits [Line Items]
Charges and credits, Pretax Credit							$ 63	1,021	202
Charges and credits, Tax Expense								71	7
Charges and credits, Net							63	950	195
Impairment and Other | Other
Charges And Credits [Line Items]
Charges and credits, Pretax Credit						62	33	60	79
Charges and credits, Tax Expense						4	1	4	9
Charges and credits, Net						58	32	56	70
Impairment and Other | Valuation allowance
Charges And Credits [Line Items]
Charges and credits, Tax Expense									(164)
Charges and credits, Net									$ 164
Impairment and Other | Fixed Asset Impairment
Charges And Credits [Line Items]
Charges and credits, Pretax Credit								666
Charges and credits, Tax Expense								52
Charges and credits, Net								614
Impairment and Other | Inventory Write Down
Charges And Credits [Line Items]
Charges and credits, Pretax Credit								603
Charges and credits, Tax Expense								49
Charges and credits, Net								554
Impairment and Other | Right Of Use Asset Impairments
Charges And Credits [Line Items]
Charges and credits, Pretax Credit								311
Charges and credits, Tax Expense								67
Charges and credits, Net								244
Impairment and Other | Costs Associated With Exiting Certain Activities1
Charges And Credits [Line Items]
Charges and credits, Pretax Credit								205
Charges and credits, Tax Expense								(25)
Charges and credits, Net								230
Impairment and Other | Exploration Data Impairment
Charges And Credits [Line Items]
Charges and credits, Pretax Credit								156
Charges and credits, Tax Expense								2
Charges and credits, Net								154
Impairment and Other | Repurchase of bonds
Charges And Credits [Line Items]
Charges and credits, Pretax Credit								40
Charges and credits, Tax Expense								2
Charges and credits, Net								38
Impairment and Other | Postretirement Benefits Curtailment Gain
Charges And Credits [Line Items]
Charges and credits, Pretax Credit								(69)
Charges and credits, Tax Expense								(16)
Charges and credits, Net								$ (53)
Impairment and Other | Facility exit charges
Charges And Credits [Line Items]
Charges and credits, Pretax Credit							254
Charges and credits, Tax Expense							39
Charges and credits, Net							$ 215
Impairment and Other | Gain on sale of OneStim
Charges And Credits [Line Items]
Charges and credits, Pretax Credit						(104)
Charges and credits, Tax Expense						(11)
Charges and credits, Net						$ (93)