Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Jul. 01, 2018	Jun. 30, 2018
Loss Contingencies [Line Items]
Other current assets	$ 558		$ 558		$ 368	$ 372
U.K. Newspaper Matters [Member]
Loss Contingencies [Line Items]
Selling, general and administrative expenses (benefit), net	4	$ 3	6	$ (40)
Litigation liability accrued	50		50
Impact due to reversal of previous accrued liability due to settlement with tax authority		$ 46		$ 46
U.K. Newspaper Matters Indemnification [Member] | 21st Century Fox [Member]
Loss Contingencies [Line Items]
Other current assets	$ 47		$ 47