Parliament could force the ABC to release details of its settlement with sacked managing director Michelle Guthrie after the public broadcaster declared the terms of the resolution would be kept confidential.

The parties reached a settlement last week after Ms Guthrie filed an adverse action claim in the Federal Court over her dismissal late last year. Announcing the resolution, the ABC said the details would remain confidential and "no further public statement will be made" by either side.

Former ABC chair Justin Milne and MD Michelle Guthrie, who fell out spectacularly over email. Credit:Steven Siewert

The ABC has faced criticism for the secrecy, with Communications Minister Mitch Fifield declaring a preference for Ms Guthrie and her former employer to be transparent with the government and community about the use of taxpayer funds.

Jonathon Duniam, the Liberal chair of the Senate's environment and communications committee, is now seeking to use the powers of the committee to compel the release of the information.