Goodwill (Details) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)
Change in the carrying amount of goodwill
Balance at the beginning of the period	$ 2,003.8
Purchase price allocation adjustments	(76.7)
Foreign currency translation loss	(3.4)
Balance at the end of the period	1,923.7
Accumulated impairment losses	$ 0.0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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