Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2018

Statement of Comprehensive Income [Abstract]

Schedule of Comprehensive Income [Table Text Block]

The components of Other Comprehensive Income (Loss) Before Income Taxes for the three months endedMarch 31, 2018 and 2017 were:

	Three Months Ended
(Dollars in Millions)	Mar 31, 2018			Mar 31, 2017
Other Comprehensive Income (Loss) Before Income Taxes:
Unrealized Holding Gains (Losses) Arising During the Period Before Reclassification Adjustment	$	(119.5	)	$	33.6
Reclassification Adjustment for Amounts Included in Net Income	(1.9		)	(5.1		)
Unrealized Holding Gains (Losses)	(121.4		)	28.5
Foreign Currency Translation Adjustments	(0.9		)	0.1
Net Unrecognized Postretirement Benefit Costs	0.3			(0.1		)
Gain (Loss) on Cash Flow Hedges During the Period Before Reclassification Adjustment	0.6			(2.0		)
Reclassification Adjustment for Amounts Included in Net Income	0.3			—
Gain (Loss) on Cash Flow Hedges	0.9			(2.0		)
Other Comprehensive Income (Loss) Before Income Taxes	$	(121.1	)	$	26.5

The components of Other Comprehensive Income Tax Benefit (Expense) for the three months endedMarch 31, 2018 and 2017 were:

	Three Months Ended
(Dollars in Millions)	Mar 31, 2018			Mar 31, 2017
Other Comprehensive Income Tax Benefit (Expense):
Unrealized Holding Gains and Losses Arising During the Period Before Reclassification Adjustment	$	25.0		$	(11.9	)
Reclassification Adjustment for Amounts Included in Net Income	0.4			1.8
Unrealized Holding Gains	25.4			(10.1		)
Foreign Currency Translation Adjustments	0.2			—
Net Unrecognized Postretirement Benefit Costs	—			—
Gain and Loss on Cash Flow Hedges During the Period Before Reclassification Adjustment	(0.1		)	0.7
Reclassification Adjustment for Amounts Included in Net Income	(0.1		)	—
Gain and Loss on Cash Flow Hedges	(0.2		)	0.7
Other Comprehensive Income Tax Benefit (Expense)	$	25.4		$	(9.4	)

Schedule of Accumulated Other Comprehensive Income [Table Text Block]

The components of AOCI at March 31, 2018 and December 31, 2017 were:

(Dollars in Millions)	Mar 31, 2018			Dec 31, 2017
Net Unrealized Gains on Investments, Net of Income Taxes:
Available for Sale Fixed Maturities with Portion of OTTI Recognized in Earnings	$	—		$	0.2
Other Net Unrealized Gains on Investments	209.7			269.5
Foreign Currency Translation Adjustments, Net of Income Taxes	(0.5		)	0.2
Net Unrecognized Postretirement Benefit Costs, Net of Income Taxes	(89.0		)	(72.2		)
Loss on Cash Flow Hedges, Net of Income Taxes	(3.3		)	(3.3		)
Accumulated Other Comprehensive Income	$	116.9		$	194.4

Reclassification out of Accumulated Comprehensive Income [Table Text Block]

Components of AOCI were reclassified to the following lines of the Condensed Consolidated Statements of Operations for the three months endedMarch 31, 2018 and 2017:

	Three Months Ended
(Dollars in Millions)	Mar 31, 2018			Mar 31, 2017
Reclassification of AOCI from Net Unrealized Gains on Investments to:
Net Realized Gains on Sales of Investments	$	2.4		$	10.1
Net Impairment Losses Recognized in Earnings	(0.5		)	(5.0		)
Total Before Income Taxes	1.9			5.1
Income Tax Expense	(0.4		)	(1.8		)
Reclassification from AOCI, Net of Income Taxes	1.5			3.3
Reclassification of AOCI from Unrecognized Postretirement Benefit Costs to:
Interest and Other Expenses	(0.3		)	0.1
Income Tax Benefit	0.1			—
Reclassification from AOCI, Net of Income Taxes	(0.2		)	0.1
Reclassification of AOCI from Loss on Cash Flow Hedges to:
Interest and Other Expenses	(0.1		)	—
Income Tax Benefit	0.1			—
Reclassification from AOCI, Net of Income Taxes	—			—
Total Reclassification from AOCI to Net Income (Loss)	$	1.3		$	3.4