Derivative Financial Instruments - Effect of Hedge Activity on Income and Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
The Effect of Derivative Instruments in the Consolidated Income Statement
Loss (income) from continuing operations before income taxes	$ (104)	$ (136)	$ (232)	$ (330)
Financing cost
The Effect of Derivative Instruments in the Consolidated Income Statement
Loss (income) from continuing operations before income taxes	73	137	178	297
Gains/(losses) of Total hedge activity	$ 10	$ 2	$ 19	$ 7