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Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2022

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

(in millions)			Investment Securities						Defined Benefit Plans						Derivative Investments						Foreign Currency Translation						Total
Balance at December 31, 2021			$	1.1					$	(34.8)					$	66.1					$	21.1					$	53.5
Other comprehensive income before reclassifications and income tax benefit (expense)			(2.7)						14.9						—						(195.4)						(183.2)
Amounts reclassified from accumulated other comprehensive income			—						1.2						(1.9)						—						(0.7)
Income tax benefit (expense)			0.7						(4.1)						0.5						—						(2.9)
Net current period other comprehensive income			(2.0)						12.0						(1.4)						(195.4)						(186.8)
Balance at December 31, 2022			$	(0.9)					$	(22.8)					$	64.7					$	(174.3)					$	(133.3)

(in millions)			Investment Securities						Defined Benefit Plans						Derivative Investments						Foreign Currency Translation						Total
Balance at December 31, 2020			$	1.6					$	(57.1)					$	67.0					$	123.4					$	134.9
Other comprehensive income before reclassifications and income tax benefit (expense)			(1.0)						25.5						—						(62.0)						(37.5)
Amounts reclassified from accumulated other comprehensive income			0.3						4.4						(1.2)						(40.3)						(36.8)
Income tax benefit (expense)			0.2						(7.6)						0.3						—						(7.1)
Net current period other comprehensive income			(0.5)						22.3						(0.9)						(102.3)						(81.4)
Balance at December 31, 2021			$	1.1					$	(34.8)					$	66.1					$	21.1					$	53.5

(in millions)			Investment Securities						Defined Benefit Plans						Derivative Investments						Foreign Currency Translation						Total
Balance at December 31, 2019			$	0.8					$	(55.1)					$	69.0					$	(11.3)					$	3.4
Other comprehensive income before reclassifications and income tax benefit (expense)			1.1						(7.4)						—						134.3						128.0
Amounts reclassified from accumulated other comprehensive income			—						4.7						(2.7)						0.4						2.4
Income tax benefit (expense)			(0.3)						0.7						0.7						—						1.1
Net current period other comprehensive income			0.8						(2.0)						(2.0)						134.7						131.5
Balance at December 31, 2020			$	1.6					$	(57.1)					$	67.0					$	123.4					$	134.9

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- References

No definition available.

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X

- Definition

Tabular disclosure of the components of accumulated other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

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