Long-term Debt and Other Financing Arrangements - Additional Information (Detail) In Millions, unless otherwise specified	0 Months Ended		9 Months Ended										0 Months Ended	3 Months Ended	9 Months Ended						9 Months Ended		0 Months Ended	9 Months Ended		9 Months Ended
	Jul. 31, 2014 USD ($)	Apr. 30, 2014 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 Class A Term Loans USD ($)	Sep. 30, 2014 Class B-1 Term Loans USD ($)	Sep. 30, 2014 Class B-1 Term Loans Base Rate Loans	Sep. 30, 2014 Class B-2 Term Loans USD ($)	Sep. 30, 2014 Class B-2 Term Loans EUR (€)	Sep. 30, 2014 Class B-2 Term Loans Base Rate Loans	Sep. 30, 2014 Minimum Class A Term Loans Base Rate Loans	Sep. 30, 2014 Maximum Class A Term Loans Base Rate Loans	Jul. 31, 2014 Senior Debenture Loan Due 2018 USD ($)	Jun. 30, 2014 Senior Debenture Loan Due 2018 USD ($)	Sep. 30, 2014 Senior Debenture Loan Due 2018	Sep. 30, 2014 Seven Point Seven Five Percentage Senior Notes Due Two Thousand Eighteen USD ($)	Sep. 30, 2014 Revolving Credit Facility USD ($)	Sep. 30, 2014 New Revolving Line Of Credit USD ($)	Apr. 30, 2014 New Classes Term Loan USD ($)	Apr. 30, 2014 New Classes Term Loan EUR (€)	Sep. 30, 2014 Class D Term Loan	Sep. 30, 2014 Class E Term Loans	Jul. 31, 2014 Senior Debenture Loan Due 2022 USD ($)	Sep. 30, 2014 Senior Debenture Loan Due 2022	Apr. 30, 2014 Senior Debenture Loan Due 2022 USD ($)	Sep. 30, 2014 Eurocurrency Rate Loans Class B-1 Term Loans	Sep. 30, 2014 Eurocurrency Rate Loans Class B-2 Term Loans	Sep. 30, 2014 Eurocurrency Rate Loans Minimum Class A Term Loans	Sep. 30, 2014 Eurocurrency Rate Loans Maximum Class A Term Loans
Debt Instrument [Line Items]
Senior secured credit agreement amended, principal amount																			$ 3,180	€ 286
Net proceeds from issuance		750
Debt instrument interest rate stated percentage		5.00%													7.75%								5.00%	5.00%	5.00%
Convertible Subordinated Bonds, Maturity date																					Feb. 01, 2017	May 01, 2016
Debt instrument face value					1,580	500		1,100	286								635	575					800		750
Convertible Subordinated Bonds, Maturity					2019-04	2017-05		2021-04	2021-04								2016-04	2019-04
Payment to redeem outstanding senior notes			4,573	1,933									800			280
Principal amount of notes issued																1,080
Loss on Extinguishment of Debt	$ (51)													$ 45
Debt instrument maturity year															2018								2022	2022
Redemption price percentage of principal amount redeemed													100.00%			100.00%
Original principal amount repaid					3.75%	1.00%		1.00%	1.00%
Margin under term loan facility							1.25%			2.00%	0.50%	1.25%														2.25%	3.00%	1.50%	2.25%
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%
Applicable margin for senior secured term loans, base rate loans										3.00%