Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Terminated	false
John J. Lupica [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On July 31, 2023, John J. Lupica, Vice Chairman, Chubb Group, and President, North America Insurance, adopted a "Rule 10b5-1 trading arrangement" as defined under Item 408 of SEC Regulation S-K. The arrangement is scheduled to expire on October 30, 2024, subject to earlier termination in accordance with its terms. The aggregate number of Chubb common shares authorized to be sold pursuant to the trading arrangement is 17,810.
Name	John J. Lupica
Title	Vice Chairman, Chubb Group, and President, North America Insurance
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	July 31, 2023
Aggregate Available	17,810