Goodwill	3 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	GoodwillWe test each of our reporting units for goodwill impairment annually at October 1st, or upon a triggering event, in accordance with ASC Topic 350, “Intangibles – Goodwill and Other.” As of January 1, 2021, we underwent an internal reorganization in our Advisory Services and Global Workplace Solutions reportable segments (see Note 14 for further discussion). This changed the composition of our reporting units which resulted in the reallocation of $101.4 million of goodwill from our Advisory Services to our Global Workplace Solutions reportable segments as of January 1, 2021. Additionally, the change in composition of our reporting units was considered a triggering event for a quantitative test as of January 1, 2021. We determined that no impairment existed as the estimated fair values of our reporting units were in excess of their respective carrying values.

Goodwill

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

GoodwillWe test each of our reporting units for goodwill impairment annually at October 1st, or upon a triggering event, in accordance with ASC Topic 350, “Intangibles – Goodwill and Other.” As of January 1, 2021, we underwent an internal reorganization in our Advisory Services and Global Workplace Solutions reportable segments (see Note 14 for further discussion). This changed the composition of our reporting units which resulted in the reallocation of $101.4 million of goodwill from our Advisory Services to our Global Workplace Solutions reportable segments as of January 1, 2021. Additionally, the change in composition of our reporting units was considered a triggering event for a quantitative test as of January 1, 2021. We determined that no impairment existed as the estimated fair values of our reporting units were in excess of their respective carrying values.