UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Starz Common Shares	Accumulated Deficit	Parent Net Investment	[1]	Accumulated Other Comprehensive Income
Beginning balance (in shares) at Dec. 31, 2024		0.0
Beginning balance at Dec. 31, 2024	$ 911.3	$ 0.0	$ 0.0	$ 892.1		$ 19.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(153.0)			(153.0)
Net transfers from Parent	8.1			8.1
Ending balance (in shares) at Mar. 31, 2025		0.0
Ending balance at Mar. 31, 2025	766.4	$ 0.0	0.0	747.2		19.2
Beginning balance (in shares) at Dec. 31, 2024		0.0
Beginning balance at Dec. 31, 2024	911.3	$ 0.0	0.0	892.1		19.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(195.5)
Ending balance (in shares) at Jun. 30, 2025		16.7
Ending balance at Jun. 30, 2025	712.3	$ 728.3	(35.2)	0.0		19.2
Beginning balance (in shares) at Mar. 31, 2025		0.0
Beginning balance at Mar. 31, 2025	766.4	$ 0.0	0.0	747.2		19.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(42.5)
Net transfers from Parent	0.1			0.1
Issuance of Starz common shares to holders of Old Lionsgate Class A Voting and Class B Non-Voting Common Shares and Separation From Old Lionsgate (in shares)		16.7
Issuance of Starz common shares to holders of Old Lionsgate Class A Voting and Class B Non-Voting Common Shares and Separation from Old Lionsgate	0.0	$ 740.0		(740.0)
Share-based compensation after Separation	5.9	5.9
Share-based liability for modified July Vesting awards	(17.6)	$ (17.6)
Ending balance (in shares) at Jun. 30, 2025		16.7
Ending balance at Jun. 30, 2025	$ 712.3	$ 728.3	(35.2)	0.0		19.2
Beginning balance (in shares) at Dec. 31, 2025	16.7	16.7
Beginning balance at Dec. 31, 2025	$ 646.0	$ 735.1	(108.5)	0.0		19.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(164.9)		(164.9)
Stock-based compensation (in shares)		0.1
Share-based compensation	3.2	$ 3.2
Reclassification of unvested pre-spin award expense from equity to liability	(6.7)	$ (6.7)
Other comprehensive gain	1.1					1.1
Ending balance (in shares) at Mar. 31, 2026		16.8
Ending balance at Mar. 31, 2026	$ 478.7	$ 731.6	(273.4)	0.0		20.5
Beginning balance (in shares) at Dec. 31, 2025	16.7	16.7
Beginning balance at Dec. 31, 2025	$ 646.0	$ 735.1	(108.5)	0.0		19.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (354.3)
Ending balance (in shares) at Jun. 30, 2026	16.8	16.8
Ending balance at Jun. 30, 2026	$ 295.9	$ 737.3	(462.8)	0.0		21.4
Beginning balance (in shares) at Mar. 31, 2026		16.8
Beginning balance at Mar. 31, 2026	478.7	$ 731.6	(273.4)	0.0		20.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(189.4)		(189.4)
Share-based compensation	5.3	5.3
Exercise of stock options	0.4	$ 0.4
Other comprehensive gain	$ 0.9					0.9
Ending balance (in shares) at Jun. 30, 2026	16.8	16.8
Ending balance at Jun. 30, 2026	$ 295.9	$ 737.3	$ (462.8)	$ 0.0		$ 21.4

[1] Unless otherwise indicated or as the context requires, references to the “Parent” refer to Lions Gate Entertainment Corp., prior to the Separation.