Subsequent Event	6 Months Ended
Mar. 31, 2023
Subsequent Events [Abstract]
Subsequent Event	Subsequent EventAcquisition Of MPEG LA, L.L.C. On April 28, 2023, our wholly-owned subsidiary Via Licensing Corporation ("Via Corp") completed the acquisition of MPEG LA, L.L.C. ("MPEG LA"), a privately held company, for consideration, net of cash acquired, of $121.6 million. Including cash acquired of $38.9 million, total consideration was $160.6 million, consisting of approximately $135.7 million in cash and $24.8 million in the form of 24.8 million common equity units in Via LA (as defined below). In connection with the transaction, Via Corp changed its structure and name to Via Licensing Alliance LLC ("Via LA") and became a majority owned subsidiary of Dolby. Prior to the acquisition, MPEG LA was a patent pool administrator that managed several collaborative licensing programs in video imaging and other technologies. The acquisition is expected to strengthen Via's licensing capabilities, particularly in video, diversify its revenues, and reinforce its ability to develop new patent licensing programs. We are in the process of assessing the accounting for this acquisition, including the valuation of the acquired intangible assets, which will be recorded in the third quarter of 2023. "Via", as used in this Quarterly Report on Form 10-Q, means, prior to the transaction described in this Note, Via Corp and, following such transaction, Via LA.

Subsequent Event

6 Months Ended

Mar. 31, 2023

Subsequent EventAcquisition Of MPEG LA, L.L.C. On April 28, 2023, our wholly-owned subsidiary Via Licensing Corporation ("Via Corp") completed the acquisition of MPEG LA, L.L.C. ("MPEG LA"), a privately held company, for consideration, net of cash acquired, of $121.6 million. Including cash acquired of $38.9 million, total consideration was $160.6 million, consisting of approximately $135.7 million in cash and $24.8 million in the form of 24.8 million common equity units in Via LA (as defined below). In connection with the transaction, Via Corp changed its structure and name to Via Licensing Alliance LLC ("Via LA") and became a majority owned subsidiary of Dolby. Prior to the acquisition, MPEG LA was a patent pool administrator that managed several collaborative licensing programs in video imaging and other technologies. The acquisition is expected to strengthen Via's licensing capabilities, particularly in video, diversify its revenues, and reinforce its ability to develop new patent licensing programs. We are in the process of assessing the accounting for this acquisition, including the valuation of the acquired intangible assets, which will be recorded in the third quarter of 2023. "Via", as used in this Quarterly Report on Form 10-Q, means, prior to the transaction described in this Note, Via Corp and, following such transaction, Via LA.