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Income Taxes - Reconciliation of U.S. Statutory Rate to Effective Income Tax Rate on Continuing Basis (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Statutory rate | 21.00% | 21.00% | 35.00%
Add (deduct) effect of: |  |  |
State income taxes, net of federal income tax effect | 3.80% | 2.40% | 1.10%
U.S. foreign inclusions and foreign tax credit | (1.60%) | 2.10% | 2.00%
Foreign rate differential | 4.90% | 0.40% | (18.50%)
Change in uncertain tax positions | 5.90% | 0.20% | (3.00%)
Change in valuation allowance reserve | (5.90%) | 0.80% | (4.60%)
Foreign statutory tax rate change | 0.00% | 0.00% | (1.70%)
Impairment | (3.30%) | (9.70%) | 1.80%
Sale of businesses | 0.00% | 0.00% | (8.10%)
Capital loss | 25.40% | 0.00% | 0.00%
Reversal of outside basis difference | 0.40% | 0.00% | (6.70%)
U.S. Tax Reform, impact of change in tax rate and other | 0.00% | 0.00% | (174.40%)
U.S. Tax Reform, federal income tax on mandatory deemed repatriation | 0.00% | 0.20% | 19.30%
Non-deductible compensation | (1.60%) | (0.10%) | 0.90%
Return to provision | 2.20% | (0.10%) | (9.20%)
Other taxes | 1.60% | 0.10% | 2.50%
Outbound transfer of U.S. assets | 68.30% | 0.00% | 0.00%
Other | 0.80% | (0.30%) | (1.20%)
Effective rate | 121.90% | 17.00% | (164.80%)
Tax benefit related to outbound transfer of domestic assets | $ 522 |  |

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