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Marketable Securities (Tables) | 12 Months Ended
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Dec. 31, 2021
Debt Securities, Available-for-sale [Abstract] |
Schedule of marketable securities | The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current).
(Millions) |  | 2021 |  | 2020
Corporate debt securities |  | $ | — |  |  | $ | 7 |
Commercial paper |  | 109 |  |  | 237 |
Certificates of deposit/time deposits |  | 14 |  |  | 31 |
U.S. treasury securities |  | 75 |  |  | 125 |
U.S. municipal securities |  | 3 |  |  | 4 |
Current marketable securities |  | $ | 201 |  |  | $ | 404 |
U.S. municipal securities |  | $ | 27 |  |  | $ | 30 |
Non-current marketable securities |  | $ | 27 |  |  | $ | 30 |
Total marketable securities |  | $ | 228 |  |  | $ | 434 |
Schedule of marketable securities by contractual maturity | The balance at December 31, 2021, 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) |  | 2021
Due in one year or less |  | $ | 201 |
Due after one year through five years |  | 15 |
Due after five years through ten years |  | 12 |
Total marketable securities |  | $ | 228 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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