Fair Value	9 Months Ended
Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value	Fair Value The Company accounts for recurring and non‑recurring fair value measurements in accordance with ASC Topic 820, Fair Value Measurement (“ASC 820”). ASC 820 defines fair value, establishes a fair value hierarchy for assets and liabilities measured at fair value and requires expanded disclosures about fair value measurements. The ASC 820 hierarchy ranks the quality of reliability of inputs, or assumptions, used in the determination of fair value and requires assets and liabilities carried at fair value to be classified and disclosed in one of the following three categories: Level 1 - Fair value is determined by using unadjusted quoted prices that are available in active markets for identical assets and liabilities. Level 2 - Fair value is determined by using inputs other than Level 1 quoted prices that are directly or indirectly observable. Inputs can include quoted prices for similar assets and liabilities in active markets or quoted prices for identical assets and liabilities in inactive markets. Related inputs can also include those used in valuation or other pricing models, such as interest rates and yield curves that can be corroborated by observable market data. Level 3 - Fair value is determined by inputs that are unobservable and not corroborated by market data. Use of these inputs involves significant and subjective judgments to be made by a reporting entity - e.g., determining an appropriate adjustment to a discount factor for illiquidity associated with a given security. If a change in Level 3 inputs occurs, the resulting amount might result in a significantly higher or lower fair value measurement. The Company evaluates financial assets and liabilities subject to fair value measurements on a recurring basis to determine the appropriate level at which to classify them each reporting period. This determination requires the Company to make subjective judgments as to the significance of inputs used in determining fair value and where such inputs lie within the ASC 820 hierarchy. 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 capital leases and unamortized debt issuance costs, was $2,357 million as of December 31, 2018, as compared with the gross carrying value of $2,484 million. If measured at fair value, long-term debt, excluding capital lease liabilities, would be classified in Level 2 of the fair value hierarchy. Non-financial assets such as goodwill and 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 nine months ended December 31, 2018 and December 31, 2017, respectively.

Fair Value

The Company accounts for recurring and non‑recurring fair value measurements in accordance with ASC Topic 820, Fair Value Measurement (“ASC 820”). ASC 820 defines fair value, establishes a fair value hierarchy for assets and liabilities measured at fair value and requires expanded disclosures about fair value measurements. The ASC 820 hierarchy ranks the quality of reliability of inputs, or assumptions, used in the determination of fair value and requires assets and liabilities carried at fair value to be classified and disclosed in one of the following three categories:

Level 1 - Fair value is determined by using unadjusted quoted prices that are available in active markets for identical assets and liabilities.

Level 2 - Fair value is determined by using inputs other than Level 1 quoted prices that are directly or indirectly observable. Inputs can include quoted prices for similar assets and liabilities in active markets or quoted prices for identical assets and liabilities in inactive markets. Related inputs can also include those used in valuation or other pricing models, such as interest rates and yield curves that can be corroborated by observable market data.

Level 3 - Fair value is determined by inputs that are unobservable and not corroborated by market data. Use of these inputs involves significant and subjective judgments to be made by a reporting entity - e.g., determining an appropriate adjustment to a discount factor for illiquidity associated with a given security. If a change in Level 3 inputs occurs, the resulting amount might result in a significantly higher or lower fair value measurement.

The Company evaluates financial assets and liabilities subject to fair value measurements on a recurring basis to determine the appropriate level at which to classify them each reporting period. This determination requires the Company to make subjective judgments as to the significance of inputs used in determining fair value and where such inputs lie within the ASC 820 hierarchy.

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 capital leases and unamortized debt issuance costs, was $2,357 million as of December 31, 2018, as compared with the gross carrying value of $2,484 million. If measured at fair value, long-term debt, excluding capital lease liabilities, would be classified in Level 2 of the fair value hierarchy.

Non-financial assets such as goodwill and 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 nine months ended December 31, 2018 and December 31, 2017, respectively.