Long-Term Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended				12 Months Ended			1 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended					12 Months Ended											12 Months Ended			12 Months Ended			12 Months Ended
	Mar. 31, 2013	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 31, 2012	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Interest Rate Swaps [Member]	Mar. 31, 2013 Senior Secured Second Lien Notes Due 2017 [Member]	Nov. 30, 2013 Senior Secured Term Loan Facilities [Member]	Dec. 31, 2013 Federal Fund Rate [Member]	Dec. 31, 2013 Senior Secured First Lien Notes Due 2022 [Member]	Feb. 29, 2012 Senior Secured First Lien Notes Due 2022 [Member]	Dec. 31, 2013 Senior Secured Revolving Credit Facility Maturing on November 17, 2015 [Member]	Oct. 31, 2012 Senior Secured Revolving Credit Facility Maturing on November 17, 2015 [Member]	Dec. 31, 2013 Senior Secured Revolving Credit Facility Maturing on November 17, 2016 [Member]	Oct. 31, 2012 Senior Secured Revolving Credit Facility Maturing on November 17, 2016 [Member]	Dec. 31, 2013 Senior Secured First Lien Notes Due 2023 [Member]	Oct. 31, 2012 Senior Secured First Lien Notes Due 2023 [Member]	Oct. 31, 2012 Senior Unsecured Notes Due 2023 [Member]	Dec. 31, 2013 Asset-Based Revolving Credit Facility Maturing on September 30, 2016 [Member]	Dec. 31, 2013 Senior Secured Term Loan A-2 Facility Maturing on May 2, 2016 [Member]	Dec. 31, 2013 Senior Secured Term Loan A-3 Facility Maturing on February 2, 2016 [Member]	Dec. 31, 2013 Senior Secured Term Loan B-3 Facility Maturing on May 1, 2018 [Member]	Dec. 31, 2013 Senior Secured Term Loan B-2 Facility Maturing on March 31, 2017 [Member]	Dec. 31, 2013 Senior Secured First Lien Notes Due 2019 [Member]	Dec. 31, 2013 Senior Secured First Lien Notes Due 2020 [Member]	Dec. 31, 2013 Senior Secured First Lien Notes Due 2020 [Member] Maximum [Member]	Dec. 31, 2013 Senior Secured First Lien Notes Due 2020 [Member] Minimum [Member]	Dec. 31, 2013 Senior secured first lien indebtedness [Member]	Dec. 31, 2013 Maturities Ranging Two Thousand Fourteen To Two Thousand Thirty Three [Member]	Dec. 31, 2013 Maturities Ranging Two Thousand Fourteen To Two Thousand Thirty Three [Member] Maximum [Member]	Dec. 31, 2013 Maturities Ranging Two Thousand Fourteen To Two Thousand Thirty Three [Member] Minimum [Member]	Dec. 31, 2013 Maturities Ranging 2014 To 2025 [Member]	Dec. 31, 2013 Maturities Ranging 2014 To 2025 [Member] Maximum [Member]	Dec. 31, 2013 Maturities Ranging 2014 To 2025 [Member] Minimum [Member]	Dec. 31, 2013 Maturities Ranging 2015 To 2095 [Member]	Dec. 31, 2013 Maturities Ranging 2015 To 2095 [Member] Maximum [Member]	Dec. 31, 2013 Maturities Ranging 2015 To 2095 [Member] Minimum [Member]	Dec. 31, 2013 Senior Unsecured Notes Due 2021 [Member]	Dec. 31, 2012 Senior Unsecured Notes Due 2021 [Member]	Dec. 06, 2012 Senior Unsecured Notes Due 2021 [Member]	Nov. 23, 2010 Senior Unsecured Notes Due 2021 [Member]	Dec. 31, 2013 Senior Unsecured Notes Unamortized Debt Discounts [Member]
Debt Instrument [Line Items]
Redemption of aggregate principal amount										$ 201,000,000
Debt instrument, stated interest										9.875%			5.875%	5.875%					4.75%	4.75%	5.875%						8.50%	7.25%	7.875%	6.50%												6.25%	6.25%	7.75%
Percentage of redemption of principal amount										104.938%
Pretax loss on retirement of debt	(17,000,000)	(11,000,000)	(17,000,000)		(481,000,000)
Loan facility amount matured											329,000,000
Debt instrument, principal amount						2,500,000,000							1,350,000,000	1,350,000,000					1,250,000,000	1,250,000,000	1,250,000,000						1,500,000,000	1,400,000,000	1,250,000,000	3,000,000,000		6,541,000,000			246,000,000						1,000,000,000	1,000,000,000	1,000,000,000	1,525,000,000
Long-term line of credit																2,000,000,000	2,000,000,000	2,000,000,000				2,500,000,000	512,000,000	724,000,000	2,367,000,000	1,995,000,000
Debt instrument maturity date															Nov. 17, 2015		Nov. 17, 2016					Sep. 30, 2016	May 02, 2016	Feb. 02, 2016	May 01, 2018	Mar. 31, 2017
Percentage of senior secured credit facility over eligible accounts receivable																						85.00%
Line of credit outstanding																	0					2,440,000,000
Debt instrument basis spread												0.50%
Debt instrument, unamortized discount																															55,000,000														3,000,000
Capital leases and other secured debt			448,000,000
Notional amount, total									4,500,000,000
Debentures, principal amount																																						886,000,000
Senior unsecured notes																																									1,525,000,000
Debt instrument, maturities range							2018	2015																									2033	2014		2025	2014		2095	2015
Maturity of long-term debt in 2015			1,065,000
Maturity of long-term debt in 2016			2,282,000,000
Maturity of long-term debt in 2017			2,028,000,000
Maturity of long-term debt in 2018			$ 2,803,000,000