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Marketable Securities and Held-to-Maturity Debt Securities | 6 Months Ended
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Jun. 30, 2020
Marketable Securities and Held-to-Maturity Debt Securities |
Marketable Securities and Held-to-Maturity Debt Securities | NOTE 9. Marketable Securities and Held-to-Maturity Debt Securities ​ The Company invests in asset-backed securities, certificates of deposit/time deposits, commercial paper, and other securities. The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current). ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Millions) | ​ | June 30, 2020 | ​ | December 31, 2019 |
Commercial paper | ​ | $ | 195 | ​ | $ | 85 | ​
Certificates of deposit/time deposits | ​ |  | 27 | ​ |  | 10 | ​
U.S. municipal securities | ​ |  | 25 | ​ |  | 3 | ​
Current marketable securities | ​ | $ | 247 | ​ | $ | 98 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. municipal securities | ​ | $ | 34 | ​ | $ | 43 | ​
Non-current marketable securities | ​ | $ | 34 | ​ | $ | 43 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total marketable securities | ​ | $ | 281 | ​ | $ | 141 | ​
​ At June 30, 2020 and December 31, 2019, gross unrealized, gross realized, and net realized gains and/or losses (pre-tax) were not material. ​ The balances at June 30, 2020 for marketable securities by contractual maturity are shown below. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties. ​
​ | ​ | ​ | ​ | ​
(Millions) |  | June 30, 2020 |
Due in one year or less | ​ | $ | 247 | ​
Due after one year through five years | ​ |  | 14 | ​
Due after five years through ten years | ​ |  | 20 | ​
Total marketable securities | ​ | $ | 281 | ​
​ Held-to-Maturity Debt Securities ​ In connection with the in-substance debt defeasance of the Third Lien Notes described in Note 10, the Company purchased a $0.5 billion U.S. Treasury security in the fourth quarter of 2019 and transferred it to a trust with irrevocable instructions to use the proceeds from its maturity to satisfy the redemption of the Third Lien Notes that occurred in May 2020. This debt security was considered held-to-maturity due to the restrictions in satisfying and discharging the Third Lien Notes, was carried at amortized cost, and was reflected in other current assets on the Company’s consolidated balance sheet. Upon the maturity of the debt security in May 2020, the Company has no held-to-maturity debt securities as of June 30, 2020.

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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