Accounting Policies - Restricted Cash (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Cash and Cash Equivalents		$ 1,088	$ 1,539	$ 908
Restricted Cash	[1]	76	85	66
Total Cash, Cash Equivalents and Restricted Cash		$ 1,164	$ 1,624	$ 974	$ 873

[1] Includes remaining Cooper Tire restricted cash acquired of $25 million at December 31, 2021.