Income Taxes (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reported in Consolidated Balance Sheets as:
Total Operating and Capital Loss Carryforwards	$ 1,691
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	1,839	$ 2,274	$ 1,345
Tax Credit Carryforward, Valuation Allowance	111	189
Foreign [Member]
Reported in Consolidated Balance Sheets as:
Total Operating and Capital Loss Carryforwards	416
State and Local Jurisdiction [Member]
Reported in Consolidated Balance Sheets as:
Total Operating and Capital Loss Carryforwards	1,019
Tax Credit Carryforward, Valuation Allowance	100
Internal Revenue Service (IRS) [Member]
Reported in Consolidated Balance Sheets as:
Total Operating and Capital Loss Carryforwards	256
Tax Credit Carryforward, Valuation Allowance	300
Continuing Operations [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	180	216
Deferred Tax Assets, Capital Loss Carryforwards	3	4
Net deferred tax assets (liabilities) [Abstract]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	266	311
Employee benefits	72	94
Share-based compensation	62	58
Self-insured casualty claims	7	7
Lease related liabilities	43	51
Various liabilities	43	51
Deferred Tax Assets, Property, Plant and Equipment	19	24
Deferred income and other	53	31
Gross deferred tax assets	748	847
Deferred tax asset valuation allowances	(454)	(421)
Net deferred tax assets	294	426
Intangible assets, including goodwill	(42)	(69)
Property, plant and equipment	(33)	(18)
Deferred Tax Liabilities Deemed Repatriation	0	(170)
Other	(31)	(36)
Gross deferred tax liabilities	(106)	(293)
Net deferred tax assets (liabilities)	188	133
Reported in Consolidated Balance Sheets as:
Deferred Tax Assets, Net of Valuation Allowance, Current	195	139
Other liabilities and deferred credits	(7)	(6)
Net deferred tax assets (liabilities)	188	133
Income (Loss) from Continuing Operations before Income Taxes, Domestic	726	662	366
Income (Loss) from Continuing Operations before Income Taxes, Foreign	1,113	1,612	979
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 1,839	$ 2,274	$ 1,345