Income Tax - Additional Information (Detail) - Jun. 30, 2015 - USD ($) $ in Millions	Total	Total
Income Taxes [Line Items]
Long-lived assets impairment		$ 209
Deferred tax liabilities	$ 80	80
Goodwill impairment charge related to goodwill	353	353
Uncertain tax positions from expirations of statute of limitations	1	13
Deferred tax assets	$ 5	$ 5
Earliest Tax Year [Member] | U.S. Federal [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2012
Earliest Tax Year [Member] | State Tax Authorities [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2005
Earliest Tax Year [Member] | Non-U.S. Jurisdictions [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2004
Latest Tax Year [Member] | U.S. Federal [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2014
Latest Tax Year [Member] | State Tax Authorities [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2014
Latest Tax Year [Member] | Non-U.S. Jurisdictions [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2014