Fair Value of Financial Instruments - Schedule of Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2023	Dec. 31, 2022
Marketable Securities [Line Items]
Adjusted Cost	$ 22,420	$ 22,209
Gross Unrealized Gains	1	1
Gross Unrealized Losses	(19)	(25)
Fair Value	22,402	22,185
Short-term investments	6,354	5,932
U.S. government securities [Member]
Marketable Securities [Line Items]
Adjusted Cost	1,420	897
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	(3)
Fair Value	1,418	894
Short-term investments	1,418	894
Cash and Cash Equivalents	0	0
Cash and Cash Equivalents [Member]
Marketable Securities [Line Items]
Cash and Cash Equivalents	16,048	16,253
Corporate debt securities [Member]
Marketable Securities [Line Items]
Adjusted Cost	852	907
Gross Unrealized Gains	1	0
Gross Unrealized Losses	(17)	(22)
Fair Value	836	885
Short-term investments	836	885
Cash and Cash Equivalents	0	0
Certificates of deposit and time deposits [Member]
Marketable Securities [Line Items]
Adjusted Cost	4,550	4,252
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Value	4,550	4,253
Short-term investments	4,100	4,153
Cash and Cash Equivalents	450	100
Cash [Member]
Marketable Securities [Line Items]
Adjusted Cost	15,115	13,965
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	15,115	13,965
Short-term investments	0	0
Cash and Cash Equivalents	15,115	13,965
Money Market Funds [Member]
Marketable Securities [Line Items]
Adjusted Cost	483	2,188
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	483	2,188
Short-term investments	0	0
Cash and Cash Equivalents	$ 483	$ 2,188

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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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