Shareholders' Equity - AOCI Additional Details (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Gains (losses) on cash flow hedges
Net sales	$ 2,719	$ 2,953	$ 3,017	$ 2,785	$ 2,803	$ 2,946	$ 3,101	$ 2,785	$ 11,474	$ 11,635	$ 10,983
Cost of sales (excluding depreciation and amortization)									(9,203)	(9,329)	(8,717)
Selling, general and administrative									(417)	(478)	(514)
Business consolidation and other activities									(244)	(191)	(221)
Earnings before taxes	$ 123	$ 119	$ 226	$ 140	$ 123	$ 192	$ 166	$ 152	608	633	514
Tax benefit (expense) on amounts reclassified into earnings									(71)	(185)	(165)
Net earnings									536	453	380
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Gains (losses) on cash flow hedges
Earnings before taxes									28	119	(78)
Tax benefit (expense) on amounts reclassified into earnings									(6)	(27)	13
Net earnings									22	92	(65)
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Commodity contracts
Gains (losses) on cash flow hedges
Net sales									18	1	(7)
Cost of sales (excluding depreciation and amortization)									(45)	54	50
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Commodity contract and currency exchange contracts
Gains (losses) on cash flow hedges
Selling, general and administrative									7	1	(1)
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									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									35	49	(136)
Interest expense									12	14	16
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									(24)	(69)	(79)
Tax benefit (expense) on amounts reclassified into earnings									6	17	30
Recognized gain (loss), net of tax									(18)	(52)	(49)
Prior service income (expense) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amortization Of Pension And Other Postretirement Benefits:
Total before tax effect									(2)	(1)	(1)
Actuarial gains (losses) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amortization Of Pension And Other Postretirement Benefits:
Total before tax effect									(14)	(32)	(34)
Effect of pension settlement | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amortization Of Pension And Other Postretirement Benefits:
Total before tax effect									$ (8)	$ (36)	$ (44)