Derivative Instruments (Tables)

6 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

gross fair value of our derivative assets in interest rate swaps designated for hedge accounting is $13 million and is presented as other assets in the balance sheet. The fair value of interest rate swaps is estimated based on valuation models that use interest rate yield curves as Level 2 inputs.