Income Taxes - Carryforward (Detail) $ in Millions	Dec. 31, 2023 USD ($)
Federal [Member]
Income Taxes
Net operating loss carry-forwards	$ 2
Tax credit carry-forward	8
State [Member]
Income Taxes
Net operating loss carry-forwards	2,300
Tax credit carry-forward	9
Foreign [Member]
Income Taxes
Tax credit carry-forward	$ 39

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-3

Name:	us-gaap_TaxCreditCarryforwardAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant