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Goodwill and Acquired Client Relationships - Schedule of Changes in the Components of Acquired Client Relationships (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($)
Total |
Beginning balance, net book value | $ 1,449.7
Ending balance, net book value | 1,443.1
Acquired Client Relationships |
Definite-lived |
Beginning balance, gross book value | 1,295.5
Beginning balance, accumulated amortization | (874.5)
Beginning balance, net book value | 421.0
Amortization and impairments | (23.2)
Foreign currency translation | 2.2
Ending balance, gross book value | 1,297.7
Ending balance, accumulated amortization | (897.7)
Ending balance, net book value | 400.0
Indefinite-lived |
Beginning balance, net book value | 1,028.7
Intangible amortization and impairments | 0.0
Foreign currency translation | 14.4
Ending balance, net book value | 1,043.1
Total |
Beginning balance, net book value | 1,449.7
Amortization and impairments | (23.2)
Foreign currency translation | 16.6
Ending balance, net book value | $ 1,443.1

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