Acquisitions (VOBA and Other Intangible Assets) (Details) - TWG Holdings Limited $ in Millions	May 31, 2018 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Value of business acquired	$ 3,973.0
Amortizable intangible assets	448.1
Indefinite-lived intangible assets	11.6
Other intangible assets	459.7
Customer-related intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets	390.3
Technology based intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets	$ 57.8

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Value of Business Acquired

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

+ References

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