Commitments and Contingencies Schedule of Contingent Acquisition Obligations (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

The following table details the estimated future contingent acquisition obligations payable in cash as of December 31, 2017.

	2018		2019		2020		2021		2022		Thereafter		Total
Deferred acquisition payments	$	41.9	$	27.5	$	16.1	$	24.4	$	4.8	$	6.3	$	121.0
Redeemable noncontrolling interests and call options with affiliates 1	37.1		26.4		62.9		10.3		6.6		4.1		147.4
Total contingent acquisition payments	$	79.0	$	53.9	$	79.0	$	34.7	$	11.4	$	10.4	$	268.4

1 We have entered into certain acquisitions that contain both redeemable noncontrolling interests and call options with similar terms and conditions. The estimated amounts listed would be paid in the event of exercise at the earliest exercise date. We have certain redeemable noncontrolling interests that are exercisable at the discretion of the noncontrolling equity owners as of December 31, 2017. These estimated payments of $24.8 are included within the total payments expected to be made in 2018, and will continue to be carried forward into 2019 or beyond until exercised or expired. Redeemable noncontrolling interests are included in the table at current exercise price payable in cash, not at applicable redemption value, in accordance with the authoritative guidance for classification and measurement of redeemable securities.