Income Taxes - Carryforward (Detail) $ in Millions |
Dec. 31, 2020
USD ($)
|
---|---|
Federal [Member] | |
Income Taxes | |
Net operating loss carry-forwards | $ 15 |
State [Member] | |
Income Taxes | |
Net operating loss carry-forwards | 2,300 |
Tax credit carry-forward | 16 |
Foreign [Member] | |
Income Taxes | |
Tax credit carry-forward | $ 37 |