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Marketable Securities and Held-to-Maturity Debt Securities - Current and non-current (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Marketable Securities
Current marketable securities	$ 404	$ 98
Non-current marketable securities	30	43
Total marketable securities	434	141
Corporate debt securities
Marketable Securities
Current marketable securities	7
Commercial paper
Marketable Securities
Current marketable securities	237	85
Certificates of deposit/time deposits
Marketable Securities
Current marketable securities	31	10
U.S. treasury securities
Marketable Securities
Current marketable securities	125
U.S. municipal securities
Marketable Securities
Current marketable securities	4	3
Non-current marketable securities	$ 30	$ 43

X

- Definition

Amount of investment in marketable security.

+ References

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