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Restructuring and Acquisition Charges | 12 Months Ended
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Dec. 31, 2017
Restructuring and Related Activities [Abstract] |
Restructuring and Acquisition Charges |
14. | RESTRUCTURING AND ACQUISITION CHARGES
For the years ended December 31, 2017, 2016 and 2015, we recognized Restructuring and acquisition charges of $30.7 million, $68.5 million and $34.1 million, respectively. For the year ended December 31, 2017, we recognized $1.9 million related to net increases to earn-out liabilities that arose from prior period acquisition activity. In 2016, we recognized $6.5 million related to the write-off of an indefinite-lived intangible asset that arose from prior period acquisition activity and $13.5 million related to net increases to earn-out liabilities that arose from prior period acquisition activity. In 2015, we recognized $12.8 million related to the write-off of an indemnification asset that arose from prior period acquisition activity and $2.4 million related to net increases to earn-out liabilities that arose from prior period acquisition activity. In all periods, the remaining charges primarily consist of (i) severance and employment-related charges, including those related to external service providers, incurred in conjunction with a structural business shift, which can be represented by a notable change in headcount, change in leadership, or transformation of business processes, (ii) lease exit charges, and (iii) other acquisition and integration-related charges. The following table shows the restructuring and acquisition accrual activity and related payments, which are exclusive of the adjustments individually noted above.
($ in millions) | Severance & Employment-Related | Lease Exit | Other Acquisition Costs | Total
December 31, 2014 | $ | 3.0 |  | 4.2 |  | 0.4 |  |  | $ | 7.6 |
Accruals | 1.7 |  | 1.6 |  | 15.6 |  |  | 18.9 |
Payments made | (2.0 | ) | (0.1 | ) | (15.8 | ) |  | (17.9 | )
December 31, 2015 | 2.7 |  | 5.7 |  | 0.2 |  |  | 8.6 |
Accruals | 28.0 |  | 0.3 |  | 20.2 |  |  | 48.5 |
Payments made | (11.0 | ) | (0.5 | ) | (14.6 | ) |  | (26.1 | )
December 31, 2016 | 19.7 |  | 5.5 |  | 5.8 |  |  | 31.0 |
Accruals | 21.6 |  | 1.3 |  | 5.9 |  |  | 28.8 |
Payments made | (27.1 | ) | (1.1 | ) | (10.3 | ) |  | (38.5 | )
December 31, 2017 | $ | 14.2 |  | 5.7 |  | 1.4 |  |  | $ | 21.3 |
We expect the majority of accrued severance and employment-related charges and other accrued acquisition costs as of December 31, 2017 will be paid during the next twelve months. Lease exit payments depend on the terms of various leases, which extend as far out as 2022.

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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -URI http://asc.fasb.org/topic&trid=2175745 + Details
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