Equity and Accumulated Other Comprehensive Earnings - AOCI Additional Details (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Gains (losses) on cash flow hedges
Net sales	$ 2,801	$ 3,017	$ 5,586	$ 5,802
Cost of sales (excluding depreciation and amortization)	(2,230)	(2,428)	(4,445)	(4,681)
Selling, general and administrative	(111)	(111)	(242)	(238)
Business consolidation and other activities	(112)		(227)	(14)
Earnings before taxes	111	226	155	366
Tax benefit (expense) on amounts reclassified into earnings	(23)	(31)	(19)	(41)
Net earnings	92	197	115	314
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Gains (losses) on cash flow hedges
Earnings before taxes	(15)	(18)	5	6
Tax benefit (expense) on amounts reclassified into earnings	3	3	(2)	(3)
Net earnings	(12)	(15)	3	3
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Commodity contracts
Gains (losses) on cash flow hedges
Net sales	37	4	37	6
Cost of sales (excluding depreciation and amortization)	(39)	(11)	(35)	(16)
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Interest rate swap agreements
Gains (losses) on cash flow hedges
Interest expense	(2)	4	(3)	8
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Foreign currency contracts
Gains (losses) on cash flow hedges
Selling, general and administrative	(11)	(1)	7	(1)
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Cross-currency swap
Gains (losses) on cash flow hedges
Selling, general and administrative		(14)	(1)	9
Pension and Other Postretirement Benefits (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amortization Of Pension And Other Postretirement Benefits:
Total before tax effect	(114)	(5)	(125)	(10)
Tax benefit (expense) on amounts reclassified into earnings	28	2	31	3
Recognized gain (loss), net of tax	(86)	(3)	(94)	(7)
Prior service income (expense) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amortization Of Pension And Other Postretirement Benefits:
Total before tax effect	(1)		(1)
Actuarial gains (losses) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amortization Of Pension And Other Postretirement Benefits:
Total before tax effect	(9)	$ (5)	(20)	$ (10)
Effect of pension settlement | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amortization Of Pension And Other Postretirement Benefits:
Total before tax effect	$ (104)		$ (104)