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INVESTMENTS (Tables)

12 Months Ended

Dec. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Carrying value of equity securities by balance sheet location

The carrying values of our equity securities were included in the following line items in our consolidated balance sheets (in millions):


	Fair Value with Changes Recognized in Income		Measurement Alternative — No Readily Determinable Fair Value
December 31, 2022
Marketable securities	$	308	$	—
Other investments	459		42
Other noncurrent assets	1,303		—
Total equity securities	$	2,070	$	42
December 31, 2021
Marketable securities	$	376	$	—
Other investments	771		47
Other noncurrent assets	1,576		—
Total equity securities	$	2,723	$	47

Net unrealized gains and losses related to equity securities still held at the end of the period

The calculation of net unrealized gains and losses recognized during the year related to equity securities still held at the end of the year is as follows (in millions):


Year Ended December 31,	2022		2021
Net gains (losses) recognized during the year related to equity securities	$	(236)	$	509
Less: Net gains (losses) recognized during the year related to equity securities sold during the year	7		71
Net unrealized gains (losses) recognized during the year related to equity securities still held at the end of the year	$	(243)	$	438

Schedule of available-for-sale and trading securities

Our debt securities consisted of the following (in millions):


			Gross Unrealized				Estimated Fair Value
	Cost		Gains		Losses
December 31, 2022
Trading securities	$	43	$	—	$	(4)	$	39
Available-for-sale securities	979		26		(61)		944
Total debt securities	$	1,022	$	26	$	(65)	$	983
December 31, 2021
Trading securities	$	39	$	1	$	—	$	40
Available-for-sale securities	1,648		33		(132)		1,549
Total debt securities	$	1,687	$	34	$	(132)	$	1,589

Carrying values of debt securities by balance sheet location

The carrying values of our debt securities were included in the following line items in our consolidated balance sheets (in millions):


	December 31, 2022				December 31, 2021
	Trading Securities		Available-for-Sale Securities		Trading Securities		Available-for-Sale Securities

Marketable securities	$	39	$	722	$	40	$	1,283
Other noncurrent assets	—		222		—		266
Total debt securities	$	39	$	944	$	40	$	1,549

Contractual maturities of available-for-sale debt securities

The contractual maturities of these available-for-sale debt securities as of December 31, 2022 were as follows (in millions):


	Cost		Estimated Fair Value
Within 1 year	$	146	$	145
After 1 year through 5 years	621		598
After 5 years through 10 years	38		49
After 10 years	174		152
Total	$	979	$	944

Realized Gain (Loss) on Investments

The sale and/or maturity of available-for-sale debt securities resulted in the following realized activity (in millions):


Year Ended December 31,	2022		2021		2020
Gross gains	$	5	$	6	$	20
Gross losses	(136)		(10)		(13)
Proceeds	1,498		1,197		1,559