Supplemental Balance Sheet Information - Schedule of Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Other liabilities
Pension and other retiree benefits	$ 1,722	$ 1,815
Restructuring accrual	2	10
Long-term lease liabilities	451	476
Other	254	354
Total Other liabilities	$ 2,429	$ 2,655