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Income Taxes
 6 Months Ended
Sep. 30, 2024
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Income tax expense was as follows:
Three Months Ended September 30, Six Months Ended September 30,
(Dollars in millions)2024202320242023
Income tax expense$247 $213 $371 $307 
Reported income tax rate46.3 %23.3 %22.9 %15.3 %
Fluctuations in the Company’s reported income tax rates were primarily due to non-cash charges related to remeasuring the value of its Canadian retail disposal group held for sale to fair value less costs to sell, changes in the mix of earnings between various taxing jurisdictions and discrete items recognized in the quarters.
During the three months ended September 30, 2024, the Company sold certain intellectual property between McKesson wholly-owned legal entities based in foreign tax jurisdictions. The transferor entity of the intellectual property was not subject to income tax on this transaction. The recipient entity of the intellectual property is entitled to amortize the fair value of the assets for tax purposes. As a result, a discrete tax benefit of $44 million was recognized in the second quarter of fiscal 2025. During the three and six months ended September 30, 2024, the Company recorded non-cash pre-tax charges of $643 million to remeasure the Canadian retail disposal group to fair value less costs to sell, as described in Financial Note 2, “Held for Sale”. The Company’s reported income tax rates for the three and six months ended September 30, 2024 were unfavorably impacted by these charges given that no net tax benefit was recognized for these charges.
During the six months ended September 30, 2024, the Company also recognized discrete tax benefits of $58 million related to an election to change the tax status of a foreign affiliate, $38 million related to the tax impact of share-based compensation, and $47 million related to the reduction in unrecognized tax benefits due to a change in case law, partially offset by a discrete tax expense of $37 million related to interest expense accrued on unrecognized tax benefits.
During the three months ended September 30, 2023, the Company recognized a net discrete tax expense of $12 million primarily related to interest expense accrued on unrecognized tax benefits. During the six months ended September 30, 2023, the Company repatriated certain intellectual property between McKesson wholly-owned legal entities that are based in different tax jurisdictions. The transferor entity of the intellectual property was not subject to income tax on this transaction. The recipient entity of the intellectual property is entitled to amortize the fair value of the assets for tax purposes. As a result of this repatriation, and in accordance with ASU 2016-16, Intra-Entity Transfers of Assets Other Than Inventory, a net discrete tax benefit of $147 million was recognized during the three months ended June 30, 2023.
As of September 30, 2024, the Company had $1.4 billion of unrecognized tax benefits, of which $1.3 billion would reduce income tax expense and the effective tax rate if recognized. During the next twelve months, the Company does not anticipate any material reduction in its unrecognized tax benefits based on the information currently available. However, this may change as the Company continues to have ongoing discussions with various taxing authorities throughout the year.
The Company files income tax returns in the U.S. federal jurisdiction, various U.S. state jurisdictions, and various foreign jurisdictions. The Company is generally subject to audit by taxing authorities in various U.S. states and in foreign jurisdictions for fiscal years 2016 through the current fiscal year.