Long-Term Debt - Additional Information (Detail) In Millions, unless otherwise specified	1 Months Ended							12 Months Ended						12 Months Ended	1 Months Ended						1 Months Ended			12 Months Ended									12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended
	Aug. 31, 2011 USD ($)	Jun. 30, 2011 USD ($)	Dec. 31, 2012 USD ($)	Oct. 31, 2012 USD ($)	Dec. 31, 2012 Senior secured first lien notes due 2022 [Member] USD ($)	Feb. 29, 2012 Senior secured first lien notes due 2022 [Member] USD ($)	Aug. 31, 2011 Senior secured first lien notes due 2022 [Member] USD ($)	Oct. 31, 2012 Senior secured revolving credit facility maturing on November 17, 2015 [Member] USD ($)	Dec. 31, 2012 Senior secured revolving credit facility maturing on November 17, 2016 [Member] USD ($)	Oct. 31, 2012 Senior secured revolving credit facility maturing on November 17, 2016 [Member]	Oct. 31, 2012 Senior secured first lien notes due 2023 [Member] USD ($)	Oct. 31, 2012 Senior unsecured notes due 2023 [Member] USD ($)	Dec. 31, 2012 Senior unsecured notes due 2021 [Member] USD ($)	Dec. 31, 2012 Senior unsecured notes due 2021 [Member] Maximum [Member]	Jun. 30, 2011 Senior Secured Second Lien Notes Due 2014 [Member] USD ($)	Jun. 30, 2011 Senior Secured Second Lien Notes Due 2017 [Member] USD ($)	Aug. 31, 2011 Other activity aggregate principal amount of notes [Member] USD ($)	Aug. 31, 2011 Senior secured first lien notes due 2020 [Member] USD ($)	Mar. 31, 2010 Senior secured first lien notes due 2020 [Member] USD ($)	Aug. 31, 2009 Senior secured first lien notes due 2020 [Member] USD ($)	Aug. 31, 2011 Senior Secured Second Lien Toggle Notes Due 2016 [Member] USD ($)	Aug. 31, 2011 Second Lien Notes Due 2016 [Member] USD ($)	Oct. 31, 2011 Senior Secured First Lien Notes Due 2018 [Member] USD ($)	Dec. 31, 2012 Asset-based revolving credit facility maturing on September 30, 2016 [Member] USD ($)	Dec. 31, 2012 Senior secured term loan A-2 facility maturing on May 2, 2016 [Member] USD ($)	Dec. 31, 2012 Senior secured term loan A-3 facility maturing on February 2, 2016 [Member] USD ($)	Dec. 31, 2012 Senior secured term loan B-2 facility maturing on March 31, 2017 [Member] USD ($)	Dec. 31, 2012 Senior secured term loan B-3 facility maturing on May 1, 2018 [Member] USD ($)	Dec. 31, 2012 Senior secured European term loan facility maturing on November 17, 2013 [Member] USD ($)	Dec. 31, 2012 Senior secured European term loan facility maturing on November 17, 2013 [Member] EUR (€)	Dec. 31, 2012 Senior secured second lien notes due 2017 [Member] USD ($)	Dec. 31, 2012 Maturities ranging 2013 to 2033 [Member] USD ($)	Dec. 31, 2012 Maturities ranging 2013 to 2033 [Member] Minimum [Member]	Dec. 31, 2012 Maturities ranging 2013 to 2033 [Member] Maximum [Member]	Dec. 31, 2012 Maturities ranging 2015 to 2095 [Member] USD ($)	Dec. 31, 2012 Maturities ranging 2015 to 2095 [Member] Minimum [Member]	Dec. 31, 2012 Maturities ranging 2015 to 2095 [Member] Maximum [Member]	Dec. 31, 2012 Maturities ranging 2014 to 2025 [Member] USD ($)	Dec. 31, 2012 Maturities ranging 2014 to 2025 [Member] Minimum [Member]	Dec. 31, 2012 Maturities ranging 2014 to 2025 [Member] Maximum [Member]	Dec. 31, 2012 Senior unsecured notes unamortized debt discounts [Member] USD ($)	Dec. 31, 2012 Maturities ranging 2014 through 2017 [Member] Minimum [Member]	Dec. 31, 2012 Maturities ranging 2014 through 2017 [Member] Maximum [Member]	Apr. 30, 2009 Senior secured first lien notes due 2019 [Member] USD ($)	Dec. 31, 2012 Senior secured first lien indebtedness [Member] USD ($)
Line of Credit Facility [Line Items]
Debt instrument, principal amount				$ 2,500	$ 1,350	$ 1,350	$ 2,000				$ 1,250	$ 1,250	$ 1,000				$ 5,000	$ 3,000	$ 1,400	$ 1,250			$ 500								$ 201	$ 7,541						$ 246						$ 1,500
Debt instrument, stated interest					5.875%	5.875%	7.50%				4.75%	5.875%	6.25%		9.125%	9.875%		6.50%	7.25%	7.875%		9.25%	8.00%								9.875%													8.50%
Long-term line of credit								2,000	2,000															2,500	542	726	2,000	2,373	317	241
Debt instrument maturity date								Nov. 17, 2015	Nov. 17, 2016															Sep. 30, 2016	May 02, 2016	Feb. 02, 2016	Mar. 31, 2017	May 01, 2018	Nov. 17, 2013	Nov. 17, 2013
Extended maturity date										Nov. 17, 2016
Debt instrument, principal amount															1,000	108
Debt instrument, redemption price of principal amount															104.563%	109.875%					106.783%	106.513%
Pretax loss on retirement of debt	406	75
Outstanding second lien toggle notes																					1,578
Outstanding second lien notes																						3,200
Debt instrument stated interest in cash																					9.625%
Debt instrument stated interest in kind																					10.375%
Percentage of senior secured credit facility over eligible accounts receivable			85.00%
Line of credit outstanding			1,470
Debt instrument basis spread			0.50%
Debt instrument, unamortized discount																															4										4				62
Capital leases and other secured debt			423
Notional amount, total			4,500
Debentures, principal amount																																			886
Debt instrument, maturities range														2021																			2013	2033		2015	2095		2014	2025		2014	2017
Senior unsecured notes													1,525
Maturity of long-term debt in 2014			772
Maturity of long-term debt in 2015			1,045
Maturity of long-term debt 2016			2,265
Maturity of long-term debt in 2017			$ 2,210