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Intangible Assets | 12 Months Ended
--- | ---
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets |
7. | Intangible Assets
The carrying amount of goodwill at December 31, 2018 and 2017 allocated by domestic and foreign operations is as follows (in millions):
|  |  |  |  | Risk |  |  |  |  |  |  |
|  | Brokerage |  |  | Management |  |  | Corporate |  |  | Total |
At December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 2,715.3 |  |  | $ | 29.6 |  |  | $ | — |  |  | $ | 2,744.9 |
United Kingdom |  |  | 753.7 |  |  |  | 9.2 |  |  |  | — |  |  |  | 762.9 |
Canada |  |  | 378.6 |  |  |  | — |  |  |  | — |  |  |  | 378.6 |
Australia |  |  | 406.3 |  |  |  | 0.3 |  |  |  | — |  |  |  | 406.6 |
New Zealand |  |  | 209.6 |  |  |  | 10.2 |  |  |  | — |  |  |  | 219.8 |
Other foreign |  |  | 110.1 |  |  |  | — |  |  |  | 2.7 |  |  |  | 112.8 |
Total goodwill - net |  | $ | 4,573.6 |  |  | $ | 49.3 |  |  | $ | 2.7 |  |  | $ | 4,625.6 |
At December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 2,280.9 |  |  | $ | 25.8 |  |  | $ | — |  |  | $ | 2,306.7 |
United Kingdom |  |  | 738.5 |  |  |  | 7.2 |  |  |  | — |  |  |  | 745.7 |
Canada |  |  | 374.0 |  |  |  | — |  |  |  | — |  |  |  | 374.0 |
Australia |  |  | 416.6 |  |  |  | — |  |  |  | — |  |  |  | 416.6 |
New Zealand |  |  | 209.3 |  |  |  | 9.6 |  |  |  | — |  |  |  | 218.9 |
Other foreign |  |  | 99.9 |  |  |  | — |  |  |  | 3.0 |  |  |  | 102.9 |
Total goodwill - net |  | $ | 4,119.2 |  |  | $ | 42.6 |  |  | $ | 3.0 |  |  | $ | 4,164.8 |
The changes in the carrying amount of goodwill for 2018 and 2017 are as follows (in millions):
|  |  |  |  | Risk |  |  |  |  |  |  |
|  | Brokerage |  |  | Management |  |  | Corporate |  |  | Total |
Balance as of January 1, 2017, as reported |  | $ | 3,736.9 |  |  | $ | 28.1 |  |  | $ | 2.8 |  |  | $ | 3,767.8 |
Adoption of Topic 606 related to 2016 acquisitions |  |  | (14.6 | ) |  |  | — |  |  |  | — |  |  |  | (14.6 | )
Balance as of January 1, 2017, as restated |  |  | 3,722.3 |  |  |  | 28.1 |  |  |  | 2.8 |  |  |  | 3,753.2 |
Goodwill acquired during the year |  |  | 290.4 |  |  |  | 14.1 |  |  |  | — |  |  |  | 304.5 |
Adoption of Topic 606 related to 2017 acquisitions |  |  | (18.5 | ) |  |  | — |  |  |  | — |  |  |  | (18.5 | )
Goodwill adjustments related to appraisals and other acquisition adjustments |  |  | 14.7 |  |  |  | — |  |  |  | — |  |  |  | 14.7 |
Foreign currency translation adjustments during the year |  |  | 110.3 |  |  |  | 0.4 |  |  |  | 0.2 |  |  |  | 110.9 |
Balance as of December 31, 2017, as restated |  |  | 4,119.2 |  |  |  | 42.6 |  |  |  | 3.0 |  |  |  | 4,164.8 |
Goodwill acquired during the year |  |  | 574.7 |  |  |  | 9.9 |  |  |  | — |  |  |  | 584.6 |
Goodwill adjustments related to appraisals and other acquisition adjustments |  |  | 2.2 |  |  |  | (2.3 | ) |  |  | — |  |  |  | (0.1 | )
Foreign currency translation adjustments during the year |  |  | (122.5 | ) |  |  | (0.9 | ) |  |  | (0.3 | ) |  |  | (123.7 | )
Balance as of December 31, 2018 |  | $ | 4,573.6 |  |  | $ | 49.3 |  |  | $ | 2.7 |  |  | $ | 4,625.6 |
Major classes of amortizable intangible assets consist of the following (in millions):
|  | December 31, |
|  | 2018 |  |  | 2017 |
Expiration lists |  | $ | 3,379.4 |  |  | $ | 3,055.9 |
Accumulated amortization - expiration lists |  |  | (1,676.8 | ) |  |  | (1,422.1 | )
|  |  | 1,702.6 |  |  |  | 1,633.8 |
Non-compete agreements |  |  | 58.0 |  |  |  | 53.5 |
Accumulated amortization - non-compete agreements |  |  | (48.5 | ) |  |  | (46.1 | )
|  |  | 9.5 |  |  |  | 7.4 |
Trade names |  |  | 86.0 |  |  |  | 25.9 |
Accumulated amortization - trade names |  |  | (25.1 | ) |  |  | (22.5 | )
|  |  | 60.9 |  |  |  | 3.4 |
Net amortizable assets |  | $ | 1,773.0 |  |  | $ | 1,644.6 |
Estimated aggregate amortization expense for each of the next five years is as follows (in millions):
2019 |  | $ | 287.2 |
2020 |  |  | 270.7 |
2021 |  |  | 247.3 |
2022 |  |  | 222.2 |
2023 |  |  | 198.2 |
Thereafter |  |  | 547.4 |
Total |  | $ | 1,773.0 |

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- References No definition available. + Details
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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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