v3.25.1
Cover
Jun. 05, 2025
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 05, 2025
Entity File Number 1-6311
Entity Registrant Name Tidewater Inc.
Entity Central Index Key 0000098222
Entity Tax Identification Number 72-0487776
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 842 West Sam Houston Parkway North
Entity Address, Address Line Two Suite 400
Entity Address, City or Town Houston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77024
City Area Code 713
Local Phone Number 470-5300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common stock, $0.001 par value per share
Trading Symbol TDW
Security Exchange Name NYSE
Warrant [Member]  
Document Information [Line Items]  
Title of 12(b) Security Warrants to purchase shares of common stock
Trading Symbol TDW.WS
Security Exchange Name NYSEAMER