Other Noncurrent Liabilities	12 Months Ended
	Dec. 31, 2021
Other Liabilities, Noncurrent [Abstract]
Other Noncurrent Liabilities	Other Noncurrent LiabilitiesWe have deferred compensation plans and other retirement arrangements for executives which generally provide for payments upon retirement, death or termination of employment. As of December 31, 2021 and 2020, the obligations related to these plans totaled $324 million and $329 million, respectively, within noncurrent liabilities. To fund these obligations, we have established non-qualified trusts, which are included in noncurrent assets. These trusts hold life insurance policies and marketable securities. These trusts were valued at $330 million and $350 million as of December 31, 2021 and 2020, respectively. Periodic changes in the value of these trust investments, most of which are unrealized, are recognized in earnings, and serve to mitigate changes to the obligations which are also reflected in earnings.We maintain appropriate levels of insurance for business risks, including workers compensation and general liability. Insurance coverages contain various retention amounts for which we provide accruals based on the aggregate of the liability for reported claims and an actuarially determined estimated liability for claims incurred but not reported. As of December 31, 2021 and 2020, insurance liabilities of $58 million and $70 million, respectively, were included in noncurrent liabilities.