Income Taxes (Deferred Income Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Accrued expenses not currently deductible	$ 647	$ 547
Differences related to non-U.S. operations	293	294
Accrued U.S. retirement benefits	293	494
Net operating losses	183	60
Income currently recognized for tax	29	25
Other	32	43
Deferred tax assets	1,477	1,463
Deferred tax liabilities:
Differences related to non-U.S. operations	624	569
Depreciation and amortization	506	491
Accrued retirement & postretirement benefits - non-U.S. operations	403	143
Capitalized expenses currently recognized for tax	98	87
Other	32	32
Deferred tax liabilities	1,663	1,322
Balance sheet classifications:
Deferred tax assets	551	702
Deferred Tax Assets Related to Differences Related to Non-U.S. Operations
Deferred tax liabilities:
Valuation allowance	144	123
Deferred Tax Assets Related To Net Operating Loss
Deferred tax liabilities:
Valuation allowance	88	75
Deferred Tax Assets Related To Accrued Expenses Not Currently Deductible
Deferred tax liabilities:
Valuation allowance	2	0
Other Noncurrent Assets
Balance sheet classifications:
Deferred tax assets	551	702
Other Noncurrent Liabilities
Balance sheet classifications:
Other liabilities	$ 737	$ 561