Fair Value	6 Months Ended
Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value	Fair Value The Company estimates the fair value of its long-term debt primarily using an expected present value technique, which is based on observable market inputs, using interest rates currently available to the Company for instruments with similar terms and remaining maturities. The estimated fair value of the Company’s long-term debt, excluding finance leases and unamortized debt issuance costs, was $2.54 billion and $2.35 billion as of September 30, 2019 and March 31, 2019, respectively, as compared with the gross carrying value of $2.54 billion and $2.40 billion, respectively. If measured at fair value, long-term debt, excluding finance lease liabilities, would be classified in Level 2 of the fair value hierarchy. Non-financial assets such as goodwill, tangible assets, intangible assets and other contract related long-lived assets are reduced to fair value in the period an impairment charge is recognized. The fair value measurements, in such instances, would be classified in Level 3. There were no significant impairments recorded during the three and six months ended September 30, 2019 or 2018.

Fair Value

6 Months Ended

Sep. 30, 2019

The Company estimates the fair value of its long-term debt primarily using an expected present value technique, which is based on observable market inputs, using interest rates currently available to the Company for instruments with similar terms and remaining maturities. The estimated fair value of the Company’s long-term debt, excluding finance leases and unamortized debt issuance costs, was $2.54 billion and $2.35 billion as of September 30, 2019 and March 31, 2019, respectively, as compared with the gross carrying value of $2.54 billion and $2.40 billion, respectively. If measured at fair value, long-term debt, excluding finance lease liabilities, would be classified in Level 2 of the fair value hierarchy.

Non-financial assets such as goodwill, tangible assets, intangible assets and other contract related long-lived assets are reduced to fair value in the period an impairment charge is recognized. The fair value measurements, in such instances, would be classified in Level 3. There were no significant impairments recorded during the three and six months ended September 30, 2019 or 2018.