Restructuring Liability (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2016	Jun. 30, 2016
Restructuring Reserve [Roll Forward]
Restructuring liability as of January 1, 2016	$ 146.5
Restructuring charges	84.3
Cash paid	(83.5)
CWC and BASE liability at acquisition date	15.1
Foreign currency translation adjustments and other	0.3
Restructuring liability as of June 30, 2016	162.7
Current portion		$ 102.9
Noncurrent portion		59.8
Total	146.5	162.7
Employee severance and termination [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability as of January 1, 2016	68.5
Restructuring charges	78.7
Cash paid	(49.0)
CWC and BASE liability at acquisition date	13.7
Foreign currency translation adjustments and other	(1.6)
Restructuring liability as of June 30, 2016	110.3
Current portion		90.5
Noncurrent portion		19.8
Total	68.5	110.3
Office closures [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability as of January 1, 2016	7.3
Restructuring charges	1.4
Cash paid	(1.2)
CWC and BASE liability at acquisition date	0.0
Foreign currency translation adjustments and other	0.0
Restructuring liability as of June 30, 2016	7.5
Current portion		2.8
Noncurrent portion		4.7
Total	7.3	7.5
Contract termination and other [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability as of January 1, 2016	70.7
Restructuring charges	4.2
Cash paid	(33.3)
CWC and BASE liability at acquisition date	1.4
Foreign currency translation adjustments and other	1.9
Restructuring liability as of June 30, 2016	44.9
Current portion		9.6
Noncurrent portion		35.3
Total	70.7	$ 44.9
Germany \| Employee severance and termination [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges	35.7
U.K. / Ireland [Member] \| Employee severance and termination [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges	13.2
European Operations Division Central and Other [Member] \| Employee severance and termination [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges	10.8
The Netherlands \| Employee severance and termination [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges	7.6
Chile \| Employee severance and termination [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 6.6

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

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-Publisher FASB
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Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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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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No definition available.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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