Basis Of Presentation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Basis of Presentation [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ (3,216)	$ (3,387)
Cash, Cash Equivalents, and Short-term Investments	12,300		$ 16,200
Debt and Lease Obligation	57,700		58,100
Debt, Current	2,591		1,296
Line of Credit Facility, Maximum Borrowing Capacity	6,300
Increase/(Decrease) in revenue due to change in accounting estimate	(612)	7
Increase/(Decrease) in (Loss)/earnings from operations due to change in accounting estimate	$ (1,130)	$ (176)
Change in Earnings Per Share Due to Change in Accounting Estimate	$ (1.47)	$ (0.29)
Treasury shares issued for 401(k) contribution	$ 329	$ 306
Three Hundred And Sixty Four Day Revolving Credit Facility
Basis of Presentation [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	3,100
Senior Notes [Member] \| 2022
Basis of Presentation [Line Items]
Long-term Debt, Current Maturities	900
Supply Chain Financing [Member]
Basis of Presentation [Line Items]
Accounts Payable, Trade	2,100		$ 2,300
Revolving Credit Facility
Basis of Presentation [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount	$ 14,700

Increase/decrease in diluted earnings per share due to change in accounting estimate.

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[Line Items] for Change in Estimate

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Changes in estimated revenues, cost of sales and the related effect on operating income are recognized using a cumulative catch-up adjustment which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a contract’s percent complete

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Changes in estimated revenues recognized using a cumulative catch-up adjustment which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a contract’s percent complete

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Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Amount of short-term and long-term debt and lease obligation.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Value of shares of stock issued attributable to transactions classified as other.

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