Segment Information - Revenue and Long-Lived Assets by Geographic Region (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended																12 Months Ended
	Jun. 30, 2019	[1],[2]	Mar. 31, 2019	[1],[2]	Dec. 31, 2018	[1],[2]	Sep. 30, 2018	[1],[2]	Jun. 30, 2018	[1],[2]	Mar. 31, 2018	[1],[2]	Dec. 31, 2017	[1],[2]	Sep. 30, 2017	[1],[2]	Jun. 30, 2019		Jun. 30, 2018		Jun. 30, 2017
Segment Reporting Information [Line Items]
Total Revenues	$ 2,466		$ 2,457		$ 2,627		$ 2,524		$ 2,693		$ 2,093		$ 2,180		$ 2,058		$ 10,074	[3]	$ 9,024	[3]	$ 8,139	[3]
United States [Member]
Segment Reporting Information [Line Items]
Total Revenues																	3,900		3,900		3,700
U.K. [Member]
Segment Reporting Information [Line Items]
Total Revenues																	1,300		1,400		1,300
Australia [Member]
Segment Reporting Information [Line Items]
Total Revenues																	$ 4,000		$ 2,900		$ 2,300

[1] Revenue for the fiscal year ended June 30, 2019 and for the three months ended June 30, 2018 includes the impact of the consolidation of Foxtel.

[2] Revenue for the fiscal year ended June 30, 2019 reflects the adoption of the new revenue recognition standard See Note 3—Revenues.

[3] Revenues are attributed to region based on location of customer.