Income Tax (Tables)

6 Months Ended

Jun. 30, 2020

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The provision for income tax expense differed from the amounts computed by applying the U.S. federal income tax statutory rate of 21.0% to pre-tax income as a result of the following for the three and six months ended June 30, 2020 and 2019, respectively (dollars in millions):

	Three months ended June 30,						Six months ended June 30,
	2020			2019			2020			2019
Tax provision at U.S. statutory rate	$	41		$	55		$	21		$	100
Increase (decrease) in income taxes resulting from:
Tax rate differences on income in other jurisdictions	8			1			13			1
Differences in tax bases in foreign jurisdictions	(17		)	(6		)	(13		)	(21		)
Deferred tax valuation allowance	8			5			3			23
Amounts related to uncertain tax positions	1			2			7			3
Corporate rate changes	—			—			—			(2		)
Equity based compensation	1			(4		)	—			(5		)
Return to provision adjustments	(2		)	3			(1		)	4
Accrued Expenses	(4		)	1			(1		)	1
Other, net	1			1			—			1
Total provision for income taxes	$	37		$	58		$	29		$	105
Effective tax rate	18.9		%	22.1		%	28.6		%	21.9		%