Accounting Policies - Restricted Cash (Details) - USD ($) $ in Millions		Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Cash and Cash Equivalents		$ 1,053	$ 1,088	$ 1,223
Restricted Cash	[1]	84		49
Total Cash, Cash Equivalents and Restricted Cash		$ 1,137	$ 1,164	$ 1,272	$ 1,624

[1] Includes remaining Cooper Tire & Rubber Company ("Cooper Tire") restricted cash acquired of $23 million at March 31, 2022.