Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			0 Months Ended											3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 U.K. Newspaper Matters Indemnification [Member]	May 17, 2012 Harper Collins [Member] Defendant	Apr. 11, 2012 Harper Collins [Member] Defendant	Aug. 28, 2012 Harper Collins [Member] Location State	Feb. 24, 2012 Harper Collins [Member] Case	Aug. 09, 2011 Harper Collins [Member] Case	Sep. 30, 2013 21st Century Fox [Member]		Jun. 30, 2013 21st Century Fox [Member]		Sep. 30, 2013 21st Century Fox [Member] U.K. Newspaper Matters Indemnification [Member]	Jun. 30, 2013 21st Century Fox [Member] U.K. Newspaper Matters Indemnification [Member]	Sep. 30, 2013 U.K. Newspaper Matters [Member]	Sep. 30, 2012 U.K. Newspaper Matters [Member]
Loss Contingencies [Line Items]
Legal fees, professional fees, and related civil settlement costs															$ 40	$ 61
Indemnification			23
Selling, general and administrative expenses	636	710													17
Litigation liability accrued															78
Due from related party									$ 0	[1]	$ 247	[1]	$ 53	$ 40
Number of purported consumer class actions filed							5	29
Number of state Attorneys General filing action				33	16
Number of states signing the settlement agreement						49
Number of U.S. territories signing the settlement agreement						5

[1] Amounts due from 21st Century Fox as of June 30, 2013 included a $207 million cash receivable from 21st Century Fox and $40 million for amounts to be received relating to the indemnification of the U.K. Newspaper Matters. The $207 million cash receivable was received from 21st Century Fox during the three months ended September 30, 2013.