Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Taxes [Abstract]

Reconciliation Of Provision For Income Taxes

	2019			2018			2017
Consolidated tax provision at federal statutory rate		21.0	%		21.0	%		35.0	%
State income tax provisions, net of federal income tax benefit		2.6			1.6			1.7
Tax reserve adjustment		-			0.1			0.1
Changes in certain deferred tax balances		(2.3	)		(3.5	)		(0.4	)
Goodwill impairment		(11.8	)		(10.4	)		(19.1	)
Share-based payments		(0.1	)		(0.5	)		-
Federal research and development credit		-			0.1			0.1
Deferred Tax Remeasurement - 2017 Tax Reform		-			0.6			26.1
All other, net		-			(0.2	)		(0.1	)
Effective tax rate		9.4	%		8.8	%		43.4	%

Components Of Net Deferred Income Tax Liability (Asset)

($ in millions)	2019			2018
Deferred income tax liabilities:
Property, plant and equipment basis differences	$	2,184		$	2,182
Intangibles		-			18
Deferred revenue/expense		65			66
Other, net		56			-
	$	2,305		$	2,266
Deferred income tax assets:
Pension liability	$	256		$	209
Intangibles		665			-
Tax operating loss carryforward		898			1,027
Employee benefits		184			176
Interest expense deduction limitation carryforward		238			104
Accrued expenses		37			41
Lease obligations		92			33
Tax credit		39			37
Allowance for doubtful accounts		32			26
Other, net		7			1
		2,448			1,654
Less: Valuation allowance		(605	)		(497	)
Net deferred income tax asset		1,843			1,157
Net deferred income tax liability	$	462		$	1,109

Schedule Of Components Of Income Tax Expense (Benefit)

($ in millions)	2019			2018			2017
Income tax expense (benefit):
Current:
Federal	$	1		$	(1	)		(4	)
State		7			6			5
Total Current		8			5			1
Deferred:
Federal		(606	)		(77	)		(1,312	)
State		(13	)		10			(72	)
Total Deferred		(619	)		(67	)		(1,384	)
Total income tax benefit		(611	)		(62	)		(1,383	)
Income taxes charged (credited) to equity of Frontier:
Utilization of the benefits arising from restricted stock		-			-			(1	)
Deferred income taxes (benefits) arising from the recognition of additional pension/OPEB liability		32			(31	)		7
Total income taxes charged (credited) to equity of Frontier		32			(31	)		6
Total income tax benefit	$	(579	)	$	(93	)	$	(1,377	)

Changes In The Balance Of Unrecognized Tax Benefits

($ in millions)	2019		2018
Unrecognized tax benefits - beginning of year	$	11	$	12
Gross increases - prior year tax positions		-		-
Gross increases - current year tax positions		1		-
Gross decreases - FIN 48 liability release		-		-
Gross decreases - expired statute of limitations		-		(1	)
Unrecognized tax benefits - end of year	$	12	$	11