Leases Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Schedule of Lease Assets and Liabilities [Line Items]
Operating Lease, Right-of-Use Asset	[1]	$ 458	$ 521
Current operating lease liabilities	[2]	121	138
Noncurrent operating lease liabilities	[3]	338	391
Total operating lease liabilities		459	529
Finance Lease, Right-of-Use Asset, Gross		15	15
Finance Lease, Right-Of-Use Asset, Accumulated Depreciation		(11)	(10)
Finance Lease, Liability, Noncurrent		3	4
Finance Lease, Liability		4	5
Property, Plant and Equipment [Member]
Schedule of Lease Assets and Liabilities [Line Items]
Finance Lease, Right-of-Use Asset		4	5
Within One Year
Schedule of Lease Assets and Liabilities [Line Items]
Finance Lease, Liability, Current		1	1
Long-term Debt [Member]
Schedule of Lease Assets and Liabilities [Line Items]
Finance Lease, Liability, Noncurrent		$ 3	$ 4

[1] Included in other assets in the Consolidated Balance Sheet.

[2] Included in accrued and other current liabilities in the Consolidated Balance Sheet.

[3] Included in other noncurrent obligations in the Consolidated Balance Sheet.