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Pension and Other Postretirement Benefits (Details 5) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Retirement Benefits [Abstract] |  |  |
Employer contribution | $ 25 | $ 22 | $ 20
Nonqualified supplemental pension plan |  |  |
Pension and Other Postretirement Benefits |  |  |
Accrued expenses | 1 | 4 |
Other noncurrent liability | 14 | 16 |
Expenses recognized | $ 2 | $ 2 | $ 1

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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