Stockholders' Equity (Schedule of Changes in Stockholders' Equity) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Increase (Decrease) in Stockholders' Equity
Balance, beginning of period		$ 17,556	$ 15,055	$ 16,938	$ 14,881
Net income		1,868	893	2,759	1,754
Other comprehensive income (loss)		231	(218)	382	(258)
Issuance (cancellation) of shares, net		0	(138)	41	(528)
Dividends declared		0	0	(333)	(335)
Other		(24)	(37)	(156)	41
Balance, end of period		19,631	15,555	19,631	15,555
Twenty-First Century Fox stockholders
Increase (Decrease) in Stockholders' Equity
Balance, beginning of period		16,304	13,807	15,722	13,661
Net income		1,831	856	2,686	1,677
Other comprehensive income (loss)		227	(197)	369	(238)
Issuance (cancellation) of shares, net		0	(138)	41	(528)
Dividends declared		0	0	(333)	(335)
Other		27	12	(96)	103
Balance, end of period		18,389	14,340	18,389	14,340
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity
Balance, beginning of period		1,252	1,248	1,216	1,220
Net income	[1]	37	37	73	77
Other comprehensive income (loss)		4	(21)	13	(20)
Issuance (cancellation) of shares, net		0	0	0	0
Dividends declared		0	0	0	0
Other	[2]	(51)	(49)	(60)	(62)
Balance, end of period		$ 1,242	$ 1,215	$ 1,242	$ 1,215

[1] Net income attributable to noncontrolling interests excludes $48 million and $43 million for the three months ended December 31, 2017 and 2016, respectively, and $77 million and $70 million for the six months ended December 31, 2017 and 2016, respectively, relating to redeemable noncontrolling interests which are reflected in temporary equity.

[2] Other activity attributable to noncontrolling interests excludes $(35) million and $(18) million for the three months ended December 31, 2017 and 2016, respectively, and $(59) million and $(44) million for the six months ended December 31, 2017 and 2016, respectively, relating to redeemable noncontrolling interests.