CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Insurance policy income		$ 628.3	$ 620.0	$ 1,882.3	$ 1,857.6
Net investment income:
General account assets		276.9	274.1	788.9	827.8
Policyholder and other special-purpose portfolios		66.6	25.4	43.0	162.0
Realized investment gains (losses):
Net realized investment gains (losses)		8.2	5.7	(24.0)	29.3
Change in allowance for credit losses and other-than-temporary impairment losses	[1]	8.1	(3.4)	(31.4)	(5.6)
Total realized gains (losses)		16.3	2.3	(55.4)	23.7
Fee revenue and other income		25.4	22.2	86.1	75.7
Total revenues		1,013.5	944.0	2,744.9	2,946.8
Benefits and expenses:
Insurance policy benefits		560.7	582.8	1,591.8	1,816.7
Interest expense		23.7	37.5	85.5	117.1
Amortization		53.5	51.6	192.2	156.0
Loss on extinguishment of debt		0.0	0.0	0.0	7.3
Other operating costs and expenses		209.2	218.6	674.6	682.9
Total benefits and expenses		847.1	890.5	2,544.1	2,780.0
Income before income taxes		166.4	53.5	200.8	166.8
Income tax expense (benefit):
Tax expense on period income		37.2	11.5	44.8	35.4
Valuation allowance for deferred tax assets and other tax items		0.0	0.0	(34.0)	0.0
Net income		$ 129.2	$ 42.0	$ 190.0	$ 131.4
Basic:
Weighted average shares outstanding (in shares)		140,900	154,257	143,384	158,007
Net income (in dollars per share)		$ 0.92	$ 0.27	$ 1.33	$ 0.83
Diluted:
Weighted average shares outstanding (in shares)		141,730	155,260	144,090	159,061
Net income (in dollars per share)		$ 0.91	$ 0.27	$ 1.32	$ 0.83

[1] No portion of the other-than-temporary impairments recognized in the 2019 periods was included in accumulated other comprehensive income.