Other (Income) Expense - Net (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Income and Expenses [Abstract]
Extinguishment of Debt, Amount			$ 559
Defined benefit plan net periodic benefit cost (income) other than service cost	$ (15)	$ (10)	$ (27)