Supplementary Data Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Accrued Liabilities [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued Liabilities

The following table presents the components of accrued liabilities.

	December 31,
	2017		2016
Salaries, benefits and related expenses	$	441.7	$	499.0
Office and related expenses	53.2		46.7
Acquisition obligations	42.0		77.5
Interest	16.4		17.3
Other	121.4		153.5
Total accrued liabilities	$	674.7	$	794.0