Marketable Investments (Tables)

3 Months Ended

Mar. 31, 2017

Schedule of marketable investments classified as available-for-sale

Marketable investments classified as available-for-sale consisted of the following (in millions):

As of March 31, 2017	Amortized Cost		Gross Unrealized Gains		Fair Value
U.S. government and agency securities	$	311.8	$	0.1	$	311.9

Total	$	311.8	$	0.1	$	311.9

Reported under the following captions on the consolidated balance sheet:
Cash and cash equivalents					$	168.1
Non-current marketable investments					143.8

					$	311.9

Summary of the contractual maturities of available-for-sale marketable investments

The following table summarizes the contractual maturities of available-for-sale marketable investments (in millions):

	March 31, 2017
	Amortized Cost		Fair Value
Due in less than one year	$	168.1	$	168.1
Due in one to two years	80.8		80.8
Due in three to five years	62.9		63.0

Total	$	311.8	$	311.9

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

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