Tax Cuts And Jobs Act Of 2017, Reclassification From AOCI To Retained Earnings, Available-For-Sale Investments, Tax Effect

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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OTHER COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME. (Reclassification Adjustments) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Dec. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reclassification adjustment out of accumulated other comprehensive income
Non-operating income		$ (124.9)	$ (67.3)	$ (175.1)	$ (294.3)
Provision for income taxes		183.9	211.6	497.5	677.5
Total accumulated other comprehensive income (loss) [Member]
Reclassification adjustment out of accumulated other comprehensive income
Reclassification adjustment of stranded taxes on available-for-sale investments	$ (1.7)
Reclassification out of accumulated other comprehensive income [Member] \| Net unrealized holding gains or losses [Member]
Reclassification adjustment out of accumulated other comprehensive income
Non-operating income				0.0
Reclassification out of accumulated other comprehensive income [Member] \| Net gains realized on dispositions [Member]
Reclassification adjustment out of accumulated other comprehensive income
Provision for income taxes			0.0		30.5
Reclassification out of accumulated other comprehensive income [Member] \| Net gains recognized upon transfer to trading investments [Member]
Reclassification adjustment out of accumulated other comprehensive income
Provision for income taxes			0.0		9.2
Reclassification out of accumulated other comprehensive income [Member] \| Currency translation adjustments [Member]
Reclassification adjustment out of accumulated other comprehensive income
Non-operating income		0.0	(0.1)	(3.6)	(0.1)
Provision for income taxes		$ 0.0	$ 0.0	0.9	$ 0.0
Reclassification out of accumulated other comprehensive income [Member] \| Total accumulated other comprehensive income (loss) [Member]
Reclassification adjustment out of accumulated other comprehensive income
Non-operating income				(3.6)
Equity method investments [Member] \| Reclassification out of accumulated other comprehensive income [Member] \| Currency translation adjustments [Member]
Reclassification adjustment out of accumulated other comprehensive income
Non-operating income				0.0
Variable interest entities [Member] \| Reclassification out of accumulated other comprehensive income [Member] \| Currency translation adjustments [Member]
Reclassification adjustment out of accumulated other comprehensive income
Non-operating income				$ (3.6)