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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Schedule of Income (Loss) before Income Taxes | Income (loss) before income taxes and income tax (benefit) expense are summarized below based on the geographic location of the operation to which such earnings and income taxes are attributable.
| Income (loss) before income taxes
(In millions) | 2021 |  | 2020 |  | 2019
Ireland | $ | 153 |  |  | $ | (132) |  |  | $ | (201) |
Foreign | 2,743 |  |  | 1,878 |  |  | 2,792 |
Total income before income taxes | $ | 2,896 |  |  | $ | 1,746 |  |  | $ | 2,591 |
Schedule of Income Tax Expense (Benefit) |
| Income tax expense (benefit)
(In millions) | 2021 |  | 2020 |  | 2019
Current |  |  |  |  |
Ireland | $ | 50 |  |  | $ | 15 |  |  | $ | 26 |
Foreign | 730 |  |  | 441 |  |  | 410 |
Total current income tax expense | 780 |  |  | 456 |  |  | 436 |
Deferred |  |  |  |  |
Ireland | (2) |  |  | — |  |  | 3 |
Foreign | (28) |  |  | (125) |  |  | (61) |
Total deferred income tax expense (benefit) | (30) |  |  | (125) |  |  | (58) |
Total income tax expense | $ | 750 |  |  | $ | 331 |  |  | $ | 378 |
Schedule of Reconciliation of Effective Income Tax Rate | Reconciliations of income taxes from the Ireland national statutory rate of 25% to the consolidated effective income tax rate are as follows:
| 2021 |  | 2020 |  | 2019
Income taxes at the applicable statutory rate | 25.0 | % |  | 25.0 | % |  | 25.0 | %
Ireland operations |  |  |  |  |
Ireland tax on trading income | (0.7) | % |  | (0.2) | % |  | (1.0) | %
Nondeductible interest expense | 0.6 | % |  | 2.7 | % |  | 3.9 | %
Ireland Other - net | (0.2) | % |  | 0.4 | % |  | 0.1 | %
Foreign operations |  |  |  |  |
Tax impact on sale of businesses | 9.1 | % |  | 3.9 | % |  | — | %
Earnings taxed at other than the applicable statutory tax rate | (8.0) | % |  | (14.0) | % |  | (14.8) | %
Other items | (0.1) | % |  | 1.6 | % |  | 3.3 | %
Worldwide operations |  |  |  |  |
Adjustments to tax liabilities | 0.2 | % |  | (0.6) | % |  | (0.5) | %
Adjustments to valuation allowances | — | % |  | 0.2 | % |  | (1.4) | %
Effective income tax expense rate | 25.9 | % |  | 19.0 | % |  | 14.6 | %
Schedule of Worldwide Income Tax Payments | Worldwide income tax payments, net of tax refunds, are as follows:
(In millions) |
2021 | $ | 753 |
2020 | 391 |
2019 | 425 |
Schedule of Components of Deferred Income Taxes | Components of noncurrent deferred income taxes are as follows:
| December 31
| 2021 |  | 2020
(In millions) | Noncurrent assets and liabilities |  | Noncurrent assets and liabilities
Accruals and other adjustments |  |  |
Employee benefits | $ | 348 |  |  | $ | 553 |
Depreciation and amortization | (1,087) |  |  | (1,101) |
Other accruals and adjustments | 385 |  |  | 505 |
Ireland income tax loss carryforwards | 1 |  |  | 1 |
Foreign income tax loss carryforwards | 3,127 |  |  | 1,815 |
Foreign income tax credit carryforwards | 263 |  |  | 309 |
Valuation allowance for income tax loss and income tax credit carryforwards | (3,139) |  |  | (1,863) |
Other valuation allowances | (65) |  |  | (67) |
Total deferred income taxes | (167) |  |  | 152 |
Deferred income taxes reported as held for sale | — |  |  | 3 |
Deferred income taxes | $ | (167) |  |  | $ | 149 |
Schedule of Foreign Tax Loss Carryforwards and Income Tax Credit Carryforwards | These carryforwards and their respective expiration dates are summarized below:
(In millions) | 2022 through 2026 |  | 2027 through 2031 |  | 2032 through 2036 |  | 2037 through 2046 |  |  |  | Not subject to expiration |  | Valuation allowance
Ireland income tax loss carryforwards | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  |  |  | $ | 8 |  |  | $ | — |
Ireland deferred income tax assets for income tax loss carryforwards | — |  |  | — |  |  | — |  |  | — |  |  |  |  | 1 |  |  | (1) |
Foreign income tax loss carryforwards | 363 |  |  | 7,335 |  |  | 7,061 |  |  | 299 |  |  |  |  | 2,301 |  |  | — |
Foreign deferred income tax assets for income tax loss carryforwards | 60 |  |  | 670 |  |  | 1,768 |  |  | 84 |  |  |  |  | 560 |  |  | (2,982) |
Foreign deferred income tax assets for income tax loss carryforwards after ASU 2013-11 | 47 |  |  | 668 |  |  | 1,768 |  |  | 84 |  |  |  |  | 560 |  |  | (2,982) |
Foreign income tax credit carryforwards | 50 |  |  | 183 |  |  | 55 |  |  | 4 |  |  |  |  | 30 |  |  | (156) |
Foreign income tax credit carryforwards after ASU 2013-11 | 28 |  |  | 146 |  |  | 55 |  |  | 4 |  |  |  |  | 30 |  |  | (156) |
Schedule of Gross Unrecognized Income Tax Benefits | A summary of gross unrecognized income tax benefits is as follows:
(In millions) | 2021 |  | 2020 |  | 2019
Balance at January 1 | $ | 1,036 |  |  | $ | 1,001 |  |  | $ | 913 |
Increases and decreases as a result of positions taken during prior years |  |  |  |  |
Transfers from valuation allowances | 6 |  |  | — |  |  | 15 |
Other increases, including currency translation | 22 |  |  | 10 |  |  | 22 |
Other decreases, including currency translation | (10) |  |  | (10) |  |  | (10) |
Increases related to acquired businesses | 12 |  |  | 7 |  |  | — |
Increases as a result of positions taken during the current year | 75 |  |  | 58 |  |  | 80 |
Decreases relating to settlements with tax authorities | (11) |  |  | (26) |  |  | (16) |
Decreases as a result of a lapse of the applicable statute of limitations | (10) |  |  | (4) |  |  | (3) |
Balance at December 31 | $ | 1,120 |  |  | $ | 1,036 |  |  | $ | 1,001 |

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