Fair Value Measurements

U.S. GAAP establishes a three-level valuation hierarchy for disclosure of fair value measurements. The determination of the applicable level within the hierarchy for a particular asset or liability depends on the inputs used in its valuation as of the measurement date, notably the extent to which the inputs are market-based (observable) or internally-derived (unobservable). A financial instrument's categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The three levels are defined as follows:


•	Level 1 — inputs to the valuation methodology based on quoted prices (unadjusted) for identical assets or liabilities in active markets.

•

Level 2 — inputs to the valuation methodology based on quoted prices for similar assets or liabilities in active markets for substantially the full term of the financial instrument; quoted prices for identical or similar instruments in markets that are not active for substantially the full term of the financial instrument; and model-derived valuations whose inputs or significant value drivers are observable.


•	Level 3 — inputs to the valuation methodology based on unobservable prices or valuation techniques that are significant to the fair value measurement.

The following table summarizes the Company's financial assets and liabilities that are measured and recorded at fair value on a recurring basis, excluding accrued interest components:



	September 29, 2018		March 31, 2018
	(millions)
Investments in commercial paper^(a)(b)	$	286.9	$	234.2
Derivative assets^(a)	13.7		12.3
Derivative liabilities^(a)	40.1		110.0


^(a)	Based on Level 2 measurements.


^(b)	As of September 29, 2018, $19.9 million was included within cash and cash equivalents and $267.0 million was included within short-term investments in the consolidated balance sheet. As of March 31, 2018, $15.0 million was included within cash and cash equivalents and $219.2 million was included within short-term investments in the consolidated balance sheet.

The Company's investments in commercial paper are classified as available-for-sale and recorded at fair value in its consolidated balance sheets using external pricing data, based on interest rates and credit ratings for similar issuances with the same remaining term as the Company's investments. To the extent the Company invests in bonds, such investments are also classified as available-for-sale and recorded at fair value in its consolidated balance sheets based on quoted prices in active markets.

The Company's derivative financial instruments are recorded at fair value in its consolidated balance sheets and are valued using pricing models that are primarily based on market observable external inputs, including spot and forward currency exchange rates, benchmark interest rates, and discount rates consistent with the instrument's tenor, and consider the impact of the Company's own credit risk, if any. Changes in counterparty credit risk are also considered in the valuation of derivative financial instruments.

The Company's cash and cash equivalents, restricted cash, and time deposits are recorded at carrying value, which approximates fair value based on Level 1 measurements.

The Company's debt instruments are recorded at their carrying values in its consolidated balance sheets, which may differ from their respective fair values. The fair values of the senior notes are estimated based on external pricing data, including available quoted market prices, and with reference to comparable debt instruments with similar interest rates, credit ratings, and trading frequency, among other factors. The fair values of the Company's commercial paper notes and borrowings outstanding under its credit facilities, if any, are estimated using external pricing data, based on interest rates and credit ratings for similar issuances with the same remaining term as the Company's outstanding borrowings. Due to their short-term nature, the fair values of the Company's commercial paper notes and borrowings outstanding under its credit facilities, if any, generally approximate their carrying values.

The following table summarizes the carrying values and the estimated fair values of the Company's debt instruments:



	September 29, 2018				March 31, 2018
	Carrying Value^(a)		Fair Value^(b)		Carrying Value^(a)		Fair Value^(b)
	(millions)
$300 million 2.125% Senior Notes	$	—	$	—	$	298.1	$	299.4
$300 million 2.625% Senior Notes	288.5		296.7		288.0		298.7
$400 million 3.750% Senior Notes	395.4		396.2		—		—
Borrowings outstanding under credit facilities	—		—		10.1		10.1


^(a)	See Note 10 for discussion of the carrying values of the Company's senior notes.


^(b)	Based on Level 2 measurements.

Unrealized gains or losses resulting from changes in the fair value of the Company's debt do not result in the realization or expenditure of cash, unless the debt is retired prior to its maturity.

Non-financial Assets and Liabilities

The Company's non-financial assets, which primarily consist of goodwill, other intangible assets, and property and equipment, are not required to be measured at fair value on a recurring basis and are reported at carrying value. However, on a periodic basis or whenever events or changes in circumstances indicate that their carrying value may not be fully recoverable (and at least annually for goodwill and indefinite-lived intangible assets), non-financial assets are assessed for impairment and, if applicable, written down to and recorded at fair value, considering external market participant assumptions.

During the six-month periods ended September 29, 2018 and September 30, 2017, the Company recorded non-cash impairment charges of $11.1 million and $20.9 million, respectively, to fully write off the carrying values of certain long-lived assets based upon their assumed fair values of zero. The fair values of these assets were determined based on Level 3 measurements. Inputs to these fair value measurements included estimates of the amount and timing of the assets' net future discounted cash flows based on historical experience, current trends, and market conditions. See Note 7 for further discussion of the non-cash impairment charges recorded by the Company during the fiscal periods presented.

No goodwill impairment charges were recorded during either of the six-month periods ended September 29, 2018 or September 30, 2017. The Company performed its annual goodwill impairment assessment using a qualitative approach as of the beginning of the second quarter of Fiscal 2019. In performing the assessment, the Company identified and considered the significance of relevant key factors, events, and circumstances that affected the fair values and/or carrying amounts of its reporting units with allocated goodwill. These factors included external factors such as macroeconomic, industry, and market conditions, as well as entity-specific factors, such as the Company's actual and expected financial performance. Additionally, the results of the Company's most recent quantitative goodwill impairment test indicated that the fair values of these reporting units significantly exceeded their respective carrying values. Based on the results of its qualitative goodwill impairment assessment, the Company concluded that it is not more likely than not that the fair values of its reporting units are less than their respective carrying values, and there were no reporting units at risk of impairment.