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INCOME TAXES | 9 Months Ended
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Sep. 30, 2023
Income Tax Disclosure [Abstract] |
INCOME TAXES | INCOME TAXES The following table summarizes our Income tax expense:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
(in millions, except percentages) |  | 2023 |  | 2022 |  | 2023 |  | 2022
Income before income taxes |  | $ | 2,318 |  |  | $ | 2,432 |  |  | $ | 5,206 |  |  | $ | 3,783 |
Income tax expense |  | $ | (146) |  |  | $ | (646) |  |  | $ | (1,010) |  |  | $ | (850) |
Effective tax rate |  | 6.3 | % |  | 26.6 | % |  | 19.4 | % |  | 22.5 | %
Our effective income tax rate of 6.3% for the three months ended September 30, 2023 was lower than the U.S. federal statutory rate of 21% primarily due to a decrease in unrecognized tax benefits as a result of reaching agreement with a tax authority on certain tax positions. Our effective income tax rate of 19.4% for the nine months ended September 30, 2023 was lower than the U.S. federal statutory rate of 21% primarily due to the above mentioned reason for the three months ended September 30, 2023, partially offset by remeasurement of certain deferred tax liabilities related to acquired intangible assets and non-deductible acquired IPR&D expenses recorded associated with our acquisitions of XinThera and Tmunity. Our effective income tax rates of 26.6% and 22.5% for the three and nine months ended September 30, 2022, respectively, were higher than the U.S. federal statutory rate of 21% primarily due to a non-deductible acquired IPR&D charge recorded associated with our acquisition of MiroBio. Our income tax returns are subject to audit by federal, state and foreign tax authorities. We are currently under examination by the Internal Revenue Service for our 2016 to 2018 tax years. There are differing interpretations of tax laws and regulations, and as a result, significant disputes may arise with these tax authorities involving issues of the timing and amount of deductions and allocations of income among various tax jurisdictions. We periodically evaluate our exposures associated with our tax filing positions. We believe that it is reasonably possible that our unrecognized tax benefits may further decrease by approximately $400 million in the next 12 months due to potential resolutions with a tax authority.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480990/946-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//740/tableOfContent Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-14 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-21 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 270 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482526/740-270-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 17 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-17 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482603/740-30-50-2 + Details
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