Posted on Monday, February 9, 2026

XBRL US submitted a comment letter in response to the California Air Resources Board (CARB) Notice of Public Hearing to Consider the Proposed California Corporate Greenhouse Gas Reporting and Climate-Related Financial Risk Disclosure Initial Regulation (Notice), Staff Report (Initial Statement of Reasons), and Proposed Regulatory Text.

While the immediate objective of the proposed CARB rule is to establish funds to collect fees for SB 253 and 261, and to set an initial reporting deadline, the XBRL US letter focused on considerations related to how reported data should be prepared and formatted. In the Staff Report accompanying the NOPR, CARB stated its intent to “…undertake a second rulemaking to establish future reporting dates beyond 2026 and to provide additional details for reporting contents and format, data assurance, and related matters.”

The XBRL US comment letter recommended that CARB include requirements for data to be submitted in digital, structured, XBRL format, in the next phase of rulemaking.

Read the letter: XBRL US Response to CARB NOPR Corporate Greenhouse Gas Reporting and Climate-Related Financial Risk Disclosure



Upcoming XBRL US Events

Public Review for Version 31 of DQC Rules
Wednesday, September 30, 2026

Center for Data Quality Committee Meeting
Wednesday, October 7, 2026

AI Technologies Impact on Company Compliance Activities
Wednesday, October 14, 2026

Domain Steering Committee Meeting
Tuesday, October 20, 2026

Communications & Services Steering Committee Meeting
Tuesday, October 20, 2026

Digital Standards for Digital Assets – Supporting the GENIUS Act
Wednesday, October 21, 2026