Income Taxes (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) assessment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Income Taxes [Line Items]
Foreign earnings, as a percentage to total foreign earnings	61.00%	56.00%	59.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	35.00%
Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit)			$ (379)
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit)			(528)
Tax Cuts and Jobs Act, Decrease in Deferred Tax Liability Due to Transition Tax			220
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense (Benefit)			$ (369)
Tax Cuts and Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit)		$ (29)
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability	$ 183
Effective income tax rate reconciliation, GILTI, Amount	105	101
Effective income tax rate reconciliation, FDII, Amount	1	101
Tax assets related to net operating loss carry-forwards related to certain international subsidiaries	411	313
Deferred Tax Assets, Valuation Allowance	325	289
Tax assets related to net operating loss carry-forwards related to capital losses	62	55
State tax attributes	74	74
Approximate undistributed earnings of foreign subsidiaries and affiliated corporate joint venture companies accounted for on the equity method	11,600
Deferred Tax Liabilities, Investment in Noncontrolled Affiliates	72	70
Accrued interest and penalties on unrecognized tax benefits	26	24
Positive impact on the tax expense if the total amount of unrecognized tax benefits were recognized by the Company at one time	130
Secretariat of the Federal Revenue Bureau of Brazil [Member]
Income Taxes [Line Items]
Income tax assessment - Tax	104
Income tax assessment - Interest and Penalties	307
Argentine Tax Authorities [Member]
Income Taxes [Line Items]
Income tax assessment - Tax	14
Income tax assessment - Interest and Penalties	53
Estimated additional tax assessment	43
Additional income tax assessment - Interest and Penalties	22
Foreign [Member]
Income Taxes [Line Items]
Tax assets related to net operating loss carry-forwards related to certain international subsidiaries with no expiration date	312
Tax assets related to net operating loss carry-forwards related to certain international subsidiaries with expiration date	99
Valuation allowance recorded against tax assets related to net operating loss carry-forwards related to certain international subsidiaries	193	166
Tax and Customs Administration, Netherlands [Member]
Income Taxes [Line Items]
Income tax assessment - Tax	91
Additional income tax assessment - Interest and Penalties	$ 34
Tax years 2004, 2006. and 2007 [Member] | Secretariat of the Federal Revenue Bureau of Brazil [Member]
Income Taxes [Line Items]
Number of separate tax assessments | assessment	3
SEC Schedule, 12-09, Valuation Allowance, Other Tax Carryforward [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 62	55
SEC Schedule, 12-09, Valuation Allowance, Operating Loss Carryforward [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 70	$ 68