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Income Taxes
 3 Months Ended
Dec. 31, 2024
Income Tax Disclosure [Abstract]  
Income Taxes
Note 12—Income Taxes
For the three months ended December 31, 2024 and 2023, the effective income tax rates were 17% and 19%, respectively. The effective income tax rates differ due to various items including a change in the geographic mix of earnings.
For the three months ended December 31, 2024, the Company’s gross unrecognized tax benefits increased $93 million, and the Company’s net unrecognized tax benefits increased $12 million. The change in unrecognized tax benefits is related to various tax positions across several jurisdictions, including an increase in gross timing differences.
The Company’s tax filings are subject to examination by U.S. federal, state and foreign taxing authorities. The timing and outcome of the final resolutions of the various ongoing income tax examinations and refund claims are uncertain. It is not reasonably possible to estimate the increase or decrease in unrecognized tax benefits within the next 12 months.