Annual report pursuant to Section 13 and 15(d)

INVESTMENTS (Tables)

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INVESTMENTS (Tables)
12 Months Ended
Dec. 31, 2023
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, 2023
Marketable securities $ 345  $  
Other investments 76  42 
Other noncurrent assets 1,585   
Total equity securities $ 2,006  $ 42 
December 31, 2022
Marketable securities $ 308  $ — 
Other investments 459  42 
Other noncurrent assets 1,303  — 
Total equity securities $ 2,070  $ 42 
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, 2023 2022
Net gains (losses) recognized during the year related to equity securities $ 371  $ (236)
Less: Net gains (losses) recognized during the year related to equity securities sold during
   the year
52 
Net unrealized gains (losses) recognized during the year related to equity securities still held at
   the end of the year
$ 319  $ (243)
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, 2023
Trading securities
$ 43  $   $ (2) $ 41 
Available-for-sale securities
1,136  26  (28) 1,134 
Total debt securities
$ 1,179  $ 26  $ (30) $ 1,175 
December 31, 2022
Trading securities
$ 43  $ —  $ (4) $ 39 
Available-for-sale securities
979  26  (61) 944 
Total debt securities
$ 1,022  $ 26  $ (65) $ 983 
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, 2023 December 31, 2022
Trading Securities Available-for-Sale Securities Trading Securities Available-for-Sale Securities
Marketable securities $ 41  $ 914  $ 39  $ 722 
Other noncurrent assets   220  —  222 
Total debt securities $ 41  $ 1,134  $ 39  $ 944 
Contractual maturities of available-for-sale debt securities
The contractual maturities of these available-for-sale debt securities as of December 31, 2023 were as follows (in millions):
Cost Estimated
Fair Value
Within 1 year $ 484  $ 483 
After 1 year through 5 years 420  427 
After 5 years through 10 years 37  48 
After 10 years 195  176 
Total $ 1,136  $ 1,134 
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, 2023 2022 2021
Gross gains $ 3  $ $
Gross losses (10) (136) (10)
Proceeds 361  1,498  1,197