Sale of Accounts Receivable (Narrative) (Details) $ in Millions, € in Billions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 EUR (€)	Dec. 31, 2022 USD ($)
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Transfer of Financial Assets Accounted for as Sales, Fair Value of Derecognized Assets	$ 1,700		$ 1,700			$ 2,600
Proceeds from Sale of Other Receivables			40,700	$ 42,100
Loss on transfer of accounts receivables to purchasers	11	$ 4	45	12
Amount of receivables sold			41,200	$ 42,900
Accounts Receivable, after Allowance for Credit Loss, Current	4,443		4,443			4,926
Asset Pledged as Collateral without Right
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Accounts Receivable, after Allowance for Credit Loss, Current	1,300		1,300			$ 600
Accounts Receivable Securitization Facility [Member]
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	3,000		3,000
First Purchasers [Member] | Accounts Receivable Securitization Facility [Member]
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	1,900		1,900
Second Purchasers [Member] | Accounts Receivable Securitization Facility [Member]
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,100		$ 1,100		€ 1.0