Investments

We invest in certificates of deposit, time deposits, commercial paper and other fixed income securities. All investments meeting the U.S. GAAP definition of a security were classified as available-for-sale as of September 30, 2017 and 2016. Unrealized gains and losses on available-for-sale investments are included in our Consolidated Balance Sheet as a component of accumulated other comprehensive loss, net of any deferred taxes. Realized gains and losses are included in net income.

Our investments consist of (in millions):



	September 30,
	2017		2016
Certificates of deposit and time deposits	$	1,005.3	$	902.8
Commercial paper	20.3		—
Corporate debt securities	199.4		—
Government securities	116.8		—
Asset-backed securities	45.8		—
Total	$	1,387.6	$	902.8

Pre-tax gross unrealized gains and losses on available-for-sale investments were not material at September 30, 2017. Pre-tax gross realized gains and losses on available-for-sale investments were not material for the years ended September 30, 2017 and 2016. At September 30, 2017, there were $1.0 million of outstanding purchases of investments recorded in accounts payable that did not settle until the next fiscal year.

We evaluated all investments for which the fair value was less than amortized cost for impairment on an individual security basis at September 30, 2017. This assessment included consideration of our intent and ability to hold the security and the credit risks specific to each security. We determined that the declines in fair value of these investments were not other than temporary as of September 30, 2017, and accordingly we did not recognize any impairment charges in net income.

The table below summarizes the contractual maturities of our investments as of September 30, 2017 (in millions). Actual maturities may differ from the contractual maturities below as borrowers may have the right to prepay certain obligations.



	Fair Value
Less than one year	$	1,124.6
Due in one to five years	263.0
Total	$	1,387.6

Classification of our investments as current or noncurrent is based on the nature of the investment and when the investment is reasonably expected to be realized. These investments were included in the following line items within the Consolidated Balance Sheet (in millions):



	September 30,
	2017		2016
Short-term investments	$	1,124.6	$	902.8
Other assets	263.0		—
Total	$	1,387.6	$	902.8

Information regarding the fair value of our investments is contained in Note 9 in the Financial Statements.