Revenue - Narrative (Details)	12 Months Ended
	Dec. 31, 2021
Cable Communications | Residential | Minimum
Revenue [Line Items]
Term of contract	1 year
Cable Communications | Residential | Maximum
Revenue [Line Items]
Term of contract	2 years
Cable Communications | Business services
Revenue [Line Items]
Backlog as a percent of annual revenue (in percent)	50.00%
Cable Communications | Business services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue [Line Items]
Timing period of recognition	2 years
Cable Communications | Business services | Minimum
Revenue [Line Items]
Term of contract	2 years
Cable Communications | Business services | Maximum
Revenue [Line Items]
Term of contract	5 years
Cable Communications | Advertising | Minimum
Revenue [Line Items]
Expected payment terms	30 days
Cable Communications | Advertising | Maximum
Revenue [Line Items]
Expected payment terms	60 days
Studios and Media | Content licensing | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue [Line Items]
Timing period of recognition	2 years
Media | Advertising
Revenue [Line Items]
Expected payment terms	30 days
Media | Distribution
Revenue [Line Items]
Expected payment terms	60 days
Studios | Theatrical
Revenue [Line Items]
Expected payment terms	30 days
Studios | Content licensing | Minimum
Revenue [Line Items]
Backlog as a percent of annual revenue (in percent)	50.00%
Studios | Content licensing | Maximum
Revenue [Line Items]
Backlog as a percent of annual revenue (in percent)	100.00%
Studios | Home entertainment | Minimum
Revenue [Line Items]
Expected payment terms	60 days
Studios | Home entertainment | Maximum
Revenue [Line Items]
Expected payment terms	90 days
Sky | Direct-to-consumer
Revenue [Line Items]
Term of contract	18 months
Sky | Direct-to-consumer | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue [Line Items]
Timing period of recognition	18 months
Sky | Direct-to-consumer | Maximum
Revenue [Line Items]
Backlog as a percent of annual revenue (in percent)	50.00%