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Marketable Securities (Tables)

6 Months Ended

Apr. 01, 2017

Investments, Debt and Equity Securities [Abstract]

Reconciles Cost Basis to Fair Market Value of Company's Equity Security

As of April 1, 2017, Hologic's marketable securities consist of the following:



	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Other Than Temporary Impairment			Fair Value
Period Ended:
April 1, 2017	$	5.9	$	—	$	(0.4	)	$	—		$	5.5
September 24, 2016	$	2.4	$	—	$	(0.3	)	$	(1.1	)	$	1.0

- 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.

+ References + Details