Long-Term Debt and Financing Arrangements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended					3 Months Ended		3 Months Ended						1 Months Ended		3 Months Ended				3 Months Ended				3 Months Ended
	Sep. 30, 2012	Mar. 31, 2012 8 5/8% Senior Subordinated [Member]	Mar. 22, 2012 Expiration of former revolving credit Agreement due 2014 [Member]	Mar. 22, 2012 Expiration Of Tranche B Term Facility [Member]	Mar. 22, 2012 Expiration of Tranche B-1 letter of credit and revolving loan facilities [Member]	Sep. 30, 2012 Tranche A Term Facility due March 22, 2017 [Member]	Mar. 08, 2012 Tranche A Term Facility due March 22, 2017 [Member]	Sep. 30, 2012 Tranche A Term Facility due March 22, 2017 [Member] June 30, 2012 through March 31, 2014 [Member]	Sep. 30, 2012 Tranche A Term Facility due March 22, 2017 [Member] June 30, 2014 through March 31, 2015 [Member]	Sep. 30, 2012 Tranche A Term Facility due March 22, 2017 [Member] June 30, 2015 through March 31, 2016 [Member]	Sep. 30, 2012 Tranche A Term Facility due March 22, 2017 [Member] June 30, 2016 through December 31, 2016 [Member]	Sep. 30, 2012 Tranche A Term Facility due March 22, 2017 [Member] Due on March 22, 2017 [Member]	Sep. 30, 2012 Revolving Credit Facility (Member)	Apr. 30, 2012 8 1/8 percent senior notes due in 2015 [Member]	Mar. 22, 2012 8 1/8 percent senior notes due in 2015 [Member]	Jun. 30, 2012 8 1/8 percent senior notes due in 2015 [Member]	Apr. 06, 2012 8 1/8 percent senior notes due in 2015 [Member]	Mar. 31, 2012 8 1/8 percent senior notes due in 2015 [Member]	Mar. 08, 2012 8 1/8 percent senior notes due in 2015 [Member]	Sep. 30, 2012 Letter of Credit (Member)	Sep. 30, 2012 7 3/4 percent senior notes due August 15, 2018 [Member]	Sep. 30, 2012 6 7/8 percent senior notes due Dec 15, 2020 [Member]	Sep. 30, 2012 Other Debt [Member]	Sep. 30, 2012 Tranche A term and revolving loan facilities due March 22, 2017 [Member]
Long Term Debt And Other Financing Arrangement [Line Items]
Maximum percentage of stock of certain first-tier foreign subsidiaries pledged to secure senior credit facility	66.00%
Line of Credit Facility, Maximum Borrowing Capacity			$ 556	$ 148	$ 130	$ 244	$ 250						$ 850
Line of Credit Facility, Maturity Date						Mar. 22, 2017							Mar. 22, 2017
Repayment of term loan								3.1	6.3	9.4	12.5	125.0
Line of credit facility interest rate description																								Either (i) London Interbank Offered Rate ("LIBOR") plus a margin of 250 basis points, or (ii) a rate consisting of the greater of (a) the JPMorgan Chase prime rate plus a margin of 150 basis points, (b) the Federal Funds rate plus 50 basis points plus a margin of 150 basis points, and (c) the Eurodollar Rate plus 100 basis points plus a margin of 150 basis points
Minimum consolidated net leverage ratio leads to basis point increase	2.50
Maximum consolidated net leverage ratio leads to basis point reduction	1.50
Interest coverage ratio (minimum) effective from March 31, 2014 through March 22, 2017	2.75
Leverage Ratio Required (Maximum) for future quarters	3.50
Interest coverage required (minimum) September 30, 2012 through December 31, 2013	2.55
Amount of debt offered for exchange by the company																			250
Amount of debt tendered for exchange by the holders															232
Debt instrument redemption price as percentage of principal amount prior quarter																		104.44%
Debt instrument consent payment as percentage of principal amount																		3.00%
Amount of debt tendered for exchange by the holders on April 6, 2012														18
Debt instrument redemption price as percentage of principal amount current quarter																	104.06%
Expenses related to redemption		1													17	1
Senior notes rate															8.125%						7.75%	6.875%
Unused Borrowing Capacity													568
Outstanding borrowings in senior secured credit facility													233
Line of credit facility letters of credit outstanding																				49
Unsecured debt																					$ 225	$ 500	$ 143