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Goodwill and Acquired Client Relationships - Schedule of Changes in the Components of Acquired Client Relationships (Details) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2017 USD ($)
Total |
Beginning balance, net book value | $ 1,497.4
Ending balance, net book value | 1,467.2
Acquired Client Relationships |
Definite-lived |
Beginning balance, gross book value | 1,290.0
Beginning balance, accumulated amortization | (788.1)
Beginning balance, net book value | 501.9
Amortization and impairments | (65.1)
Foreign currency translation | 5.0
Ending balance, gross book value | 1,295.0
Ending balance, accumulated amortization | (853.2)
Ending balance, net book value | 441.8
Indefinite-lived |
Beginning balance, net book value | 995.5
Intangible amortization and impairments | 0.0
Foreign currency translation | 29.9
Ending balance, net book value | 1,025.4
Total |
Beginning balance, net book value | 1,497.4
Amortization and impairments | (65.1)
Foreign currency translation | 34.9
Ending balance, net book value | $ 1,467.2

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