Financial Instruments and Risk Management (Tables)

12 Months Ended

Dec. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Recognized Changes in Fair Value of Balance Sheet Hedges Offset by Remeasurement of Balance Sheet positions

The following table summarizes the recognized changes in fair value of our balance sheet hedges offset by remeasurement of balance sheet positions. These amounts are recognized in our consolidated statements of operations for the periods presented. The net of our changes in fair value of hedges and the remeasurement of our assets and liabilities is included in "Other non-operating income (loss)" on our consolidated statements of operations.

	Years ended December 31,
Gains (losses) dollars in millions	2019		2018
Balance Sheet Hedges - Fair Value	$	1	$	—
Balance Sheet Position - Remeasurement	3		(9		)
Net	$	4	$	(9	)