Income Taxes	9 Months Ended
Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 13 – Income Taxes We recorded a benefit for income taxes of $2.8 billion and $2.7 billion for the three and nine months ended December 31, 2017, respectively, compared to a benefit for income taxes of $29 million and a provision for income taxes of $212 million for the same periods in fiscal 2017. The change in the provision for income taxes for the three and nine months ended December 31, 2017 compared to the same periods in fiscal 2017 is primarily due to a one-time $2.9 billion income tax benefit attributable to the revaluation of our net deferred tax liabilities resulting from the reduction of the federal statutory income tax rate by the Tax Cuts and Jobs Act of 2017 (“TCJA”) from 35% to 21%. Our statutory federal income tax rate for fiscal 2018 will be a blended rate of 31.55% compared to 35% for fiscal 2017. Our assessment of the impact of the TCJA is substantially complete, and is reflected in our financial statements as of December 31, 2017 and for the three and nine months then ended. During the third quarter, we recorded an insignificant amount of tax expense related to the mandatory deemed repatriation of foreign earnings provision in the TCJA, for which the amount is provisional as we are continuing our analysis of the earnings and profits of TCPR. The issuance of future administrative guidance may further clarify the interpretation of the new law and require adjustments to the provisional amount we recorded. Any adjustment required to this provisional amount is not expected to be material. Tax-related Contingencies As of December 31, 2017, we remain under IRS examination for fiscal 2017 and fiscal 2018. The IRS examination for fiscal 2016 was concluded in the first quarter of fiscal 2018. We periodically review our uncertain tax positions. Our assessment is based on many factors including any ongoing IRS audits. For the quarter ended December 31, 2017, our assessment did not result in a material change in unrecognized tax benefits. Our deferred tax assets were $1.8 billion and $1.0 billion at December 31, 2017 and March 31, 2017, respectively, and were primarily due to the deferred deduction of allowance for credit and residual value losses and federal tax loss carryforward which have no expiration. Realization with respect to the federal tax loss carryforward is dependent on generating sufficient income prior to expiration of the loss carryforward. Although realization is not assured, management believes it is more likely than not that the deferred tax assets will be realized. The amount of the deferred tax assets considered realizable could be reduced if management’s estimates change. The total deferred tax liability, net of these deferred tax assets, was $5.4 billion and $7.9 billion at December 31, 2017 and March 31, 2017, respectively. The decrease in the total deferred tax liability, net of deferred tax assets, is attributable to the revaluation of our net deferred tax liabilities resulting from the reduction of the federal statutory income tax rate by the TCJA from 35% to 21%.

Note 13 – Income Taxes

We recorded a benefit for income taxes of $2.8 billion and $2.7 billion for the three and nine months ended December 31, 2017, respectively, compared to a benefit for income taxes of $29 million and a provision for income taxes of $212 million for the same periods in fiscal 2017. The change in the provision for income taxes for the three and nine months ended December 31, 2017 compared to the same periods in fiscal 2017 is primarily due to a one-time $2.9 billion income tax benefit attributable to the revaluation of our net deferred tax liabilities resulting from the reduction of the federal statutory income tax rate by the Tax Cuts and Jobs Act of 2017 (“TCJA”) from 35% to 21%. Our statutory federal income tax rate for fiscal 2018 will be a blended rate of 31.55% compared to 35% for fiscal 2017.

Our assessment of the impact of the TCJA is substantially complete, and is reflected in our financial statements as of December 31, 2017 and for the three and nine months then ended. During the third quarter, we recorded an insignificant amount of tax expense related to the mandatory deemed repatriation of foreign earnings provision in the TCJA, for which the amount is provisional as we are continuing our analysis of the earnings and profits of TCPR. The issuance of future administrative guidance may further clarify the interpretation of the new law and require adjustments to the provisional amount we recorded. Any adjustment required to this provisional amount is not expected to be material.

Tax-related Contingencies

As of December 31, 2017, we remain under IRS examination for fiscal 2017 and fiscal 2018. The IRS examination for fiscal 2016 was concluded in the first quarter of fiscal 2018.

We periodically review our uncertain tax positions. Our assessment is based on many factors including any ongoing IRS audits. For the quarter ended December 31, 2017, our assessment did not result in a material change in unrecognized tax benefits.

Our deferred tax assets were $1.8 billion and $1.0 billion at December 31, 2017 and March 31, 2017, respectively, and were primarily due to the deferred deduction of allowance for credit and residual value losses and federal tax loss carryforward which have no expiration. Realization with respect to the federal tax loss carryforward is dependent on generating sufficient income prior to expiration of the loss carryforward. Although realization is not assured, management believes it is more likely than not that the deferred tax assets will be realized. The amount of the deferred tax assets considered realizable could be reduced if management’s estimates change.

The total deferred tax liability, net of these deferred tax assets, was $5.4 billion and $7.9 billion at December 31, 2017 and March 31, 2017, respectively. The decrease in the total deferred tax liability, net of deferred tax assets, is attributable to the revaluation of our net deferred tax liabilities resulting from the reduction of the federal statutory income tax rate by the TCJA from 35% to 21%.