Fair Value Measurements Fair Value of Assets and Liabilities Measured on a Recurring Basis (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following tables present information about our financial instruments measured at fair value on a recurring basis as of December 31, 2015 and 2014, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value.

	December 31, 2015												Balance Sheet Classification
	Level 1			Level 2			Level 3			Total
Assets
Cash equivalents	$	875.7		$	0.0		$	0.0		$	875.7		Cash and cash equivalents
Short-term marketable securities	6.8			0.0			0.0			6.8			Marketable securities
Long-term investments	0.4			0.0			0.0			0.4			Other assets
Total	$	882.9		$	0.0		$	0.0		$	882.9
As a percentage of total assets	7.0		%	0.0		%	0.0		%	7.0		%
Liabilities
Mandatorily redeemable noncontrolling interests 1	$	0.0		$	0.0		$	45.0		$	45.0
	December 31, 2014												Balance Sheet Classification
	Level 1			Level 2			Level 3			Total
Assets
Cash equivalents	$	901.4		$	0.0		$	0.0		$	901.4		Cash and cash equivalents
Short-term marketable securities	6.6			0.0			0.0			6.6			Marketable securities
Long-term investments	0.5			0.0			0.0			0.5			Other assets
Total	$	908.5		$	0.0		$	0.0		$	908.5
As a percentage of total assets	7.1		%	0.0		%	0.0		%	7.1		%
Liabilities
Mandatorily redeemable noncontrolling interests 1	$	0.0		$	0.0		$	32.8		$	32.8

1 Relates to unconditional obligations to purchase additional noncontrolling equity shares of consolidated subsidiaries. Fair value measurement of the obligation was based upon the amount payable as if the forward contracts were settled. The amount redeemable within the next twelve months is classified in accrued liabilities; any interests redeemable thereafter are classified in other non-current liabilities.