Long-term Debt and Other Financing Arrangements - Additional Information (Detail) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended	3 Months Ended	9 Months Ended						0 Months Ended	3 Months Ended		3 Months Ended	9 Months Ended				9 Months Ended			9 Months Ended										9 Months Ended
	Jul. 31, 2014	May 31, 2014	Sep. 30, 2014 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 Class A Term Loan USD ($)	Sep. 30, 2014 Class B-1 Term Loans USD ($)	Sep. 30, 2014 Class B-2 Term Loans USD ($)	Sep. 30, 2014 Class B-2 Term Loans EUR (€)	Jul. 31, 2014 Senior Debenture Loan Due 2018 USD ($)	Jun. 30, 2014 Senior Debenture Loan Due 2018 USD ($)	Sep. 30, 2014 Senior Debenture Loan Due 2018	Jun. 30, 2014 7.75% Senior Notes Due 2018 USD ($)	Sep. 30, 2014 7.75% Senior Notes Due 2018 USD ($)	Sep. 30, 2014 Revolving credit commitments USD ($)	Sep. 30, 2014 New revolving credit commitments USD ($)	Sep. 30, 2014 Senior Secured Notes 7.75% Senior Notes Due 2018 USD ($)	Sep. 30, 2014 Senior Debenture Loan Due 2022 USD ($)	Jul. 31, 2014 Senior Debenture Loan Due 2022 USD ($)	Apr. 30, 2014 Senior Debenture Loan Due 2022 USD ($)	Sep. 30, 2014 Base Rate Loans Class A Term Loan Minimum	Sep. 30, 2014 Base Rate Loans Class A Term Loan Maximum	Sep. 30, 2014 Base Rate Loans Class B-1 Term Loans	Sep. 30, 2014 Base Rate Loans Class B-2 Term Loans	Sep. 30, 2014 Eurocurrency Rate Loans Class A Term Loan Minimum	Sep. 30, 2014 Eurocurrency Rate Loans Class A Term Loan Maximum	Sep. 30, 2014 Eurocurrency Rate Loans Class B-1 Term Loans	Sep. 30, 2014 Eurocurrency Rate Loans Class B-2 Term Loans	Apr. 30, 2014 New Classes Term Loan USD ($)	Apr. 30, 2014 New Classes Term Loan EUR (€)	Sep. 30, 2014 Class D Term Loans	Sep. 30, 2014 Class E Term Loans
Debt Instrument [Line Items]
Debt instrument face value						$ 1,580	$ 500	$ 1,100	€ 286						$ 635	$ 575	$ 1,080	$ 1,550	$ 800	$ 750
Debt instrument, maturity year																		2022
Debt instrument interest rate stated percentage												7.75%						5.00%	5.00%	5.00%
Senior secured credit agreement amended, principal amount																													3,180	286
Convertible Subordinated Bonds, Maturity date						Apr. 01, 2019	May 01, 2017	Apr. 01, 2021	Apr. 01, 2021																						Feb. 01, 2017	May 01, 2016
Payment to redeem outstanding senior notes														280
Gain (Loss) on Extinguishment of Debt			51								45		45
Redemption price percentage of principal amount redeemed	100.00%	100.00%
Original principal amount paid in first year						5.00%
Original principal amount paid in second year						5.00%
Original principal amount paid in third year						7.50%
Original principal amount paid in fourth year						10.00%
Original principal amount paid in fifth year						72.50%
Original principal amount repaid						3.75%		1.00%	1.00%
Margin under term loan facility																					0.50%	1.25%	1.25%	2.00%	1.50%	2.25%	2.25%	3.00%
Applicable margin for senior secured term loans, base rate loans																								3.00%
Payment to redeem outstanding senior notes				$ 4,573	$ 1,933					$ 800