Financial Instruments - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023 USD ($) interest_rate_swap	Mar. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Apr. 30, 2023 USD ($) interest_rate_swap	Dec. 31, 2022 USD ($)
Derivative [Line Items]
Number of interest rate swaps held (in interest rate swaps) | interest_rate_swap	5
Total swap notional amount	$ 30,361				$ 28,681
Pretax net unrealized losses on derivatives maturing within next 12 months estimated to be reclassified from AOCI to sales	71
Equity investments without readily determinable fair values	942	$ 643
Unrealized gains recognized on investments in equity securities without readily determinable fair value	1	14
Unrealized losses recognized on investments in equity securities without readily determinable fair values	21
Cumulative unrealized gains on investments	287
Cumulative unrealized losses on investments	40
Equity securities, noncurrent	725	1,200
(Income) loss from investments in equity securities, net	(450)	708
Fair value of loans payable and long-term debt, including current portion	28,200				26,700
Debt, carrying amount	30,700				30,700
Factored accounts receivable	2,400		$ 2,500
Restricted cash	31				67
Cash collateral received from counterparties	13				66
Cash collateral advanced to counterparties					19
Subsequent Event
Derivative [Line Items]
Number of interest rate swaps held (in interest rate swaps) | interest_rate_swap				2
Equity Funds
Derivative [Line Items]
(Income) loss from investments in equity securities, net	(132)	$ 509
Level 2
Derivative [Line Items]
Cash equivalents	8,800				11,300
Interest rate swap contracts
Derivative [Line Items]
Total swap notional amount	100
Interest rate swap contracts | Subsequent Event
Derivative [Line Items]
Total swap notional amount				$ 100
Derivatives Designated as Hedging Instruments
Derivative [Line Items]
Total swap notional amount	10,073				9,215
Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Total swap notional amount	$ 20,288				$ 19,466
Maximum | Derivatives Designated as Hedging Instruments
Derivative [Line Items]
Maximum average period of maturities of contracts in years (less than)	2 years
Maximum | Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Maximum average period of maturities of contracts in years (less than)	6 months