Long-Term Debt - Additional Information (Detail) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended		0 Months Ended	6 Months Ended	1 Months Ended							6 Months Ended	0 Months Ended		0 Months Ended		6 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jul. 22, 2014 Subsequent Event [Member] USD ($)	Jun. 30, 2014 Senior Subordinated Notes [Member] USD ($)	Jun. 30, 2014 Senior Subordinated Notes [Member] Dollar Denominated Notes [Member] USD ($)	Mar. 31, 2014 Senior Subordinated Notes [Member] Dollar Denominated Notes [Member] USD ($)	Jun. 30, 2014 Senior Subordinated Notes [Member] Euro Denominated Notes [Member] USD ($)	Jun. 30, 2014 Senior Subordinated Notes [Member] Euro Denominated Notes [Member] EUR (€)	Mar. 31, 2014 Senior Subordinated Notes [Member] Euro Denominated Notes [Member] USD ($)	Mar. 31, 2014 Senior Subordinated Notes [Member] Euro Denominated Notes [Member] EUR (€)	Jun. 30, 2014 Senior Notes [Member] USD ($)	Jun. 30, 2014 Senior Notes and Senior Subordinated Notes [Member] USD ($)	Jul. 25, 2014 Senior Notes and Senior Subordinated Notes [Member] Subsequent Event [Member] USD ($)	Jul. 25, 2014 Senior Notes and Senior Subordinated Notes [Member] Subsequent Event [Member] USD ($)	Jul. 11, 2014 First and Second Lien Term Loan [Member] Subsequent Event [Member] USD ($)	Jul. 11, 2014 First and Second Lien Term Loan [Member] Subsequent Event [Member] USD ($)	Jun. 30, 2014 Cash Collateral Letter of Credit Facility Due June 2018 [Member] USD ($)	Jun. 30, 2014 Revolving Credit Facility [Member] Senior Secured Credit Agreement [Member] USD ($)
Debt Instrument [Line Items]
Exchange of senior subordinated notes							$ 70	$ 43	$ 52	€ 39	$ 92	€ 67
Loss on extinguishment of debt	(9)	(49)	(14)	(49)		5								9
Exchange of fixed rate senior notes													47
Exchange of floating rate senior notes													13
Debt exchanged for shares			571												164		91
Common shares in exchange of debt			360.5												102.0		58.0
Debt conversion price																$ 1.64		$ 1.64
First lien term loans repaid amount					312
Repayment of term loans			8.0
Amount of interest expense accreted into the outstanding loan			2
Amortization of discount on term loans			3
Capitalized payment-in-kind interest			13
Repayment of capital lease obligations			15	8
Capital lease obligations incurred			6	5
Line of credit facility, maximum borrowing capacity																				120
Proceeds from revolver borrowings			50	53																50
Repayment of revolver borrowings			50	73																50
Outstanding balance under revolving credit facility																				0
Remaining capacity under revolving credit facility																				120
Cash collateralized letter of credit facility																			137
Credit facility expiration date																			Jun. 01, 2018
Terms of cash collateral																			The terms under the letters of credit facility provide that 103% of cash collateral has to be maintained for outstanding letters of credit.
Cash collateral percent of letters of credit																			103.00%
Letter of credit facility outstanding amount																			67
Cash provided as collateral																			70
Remaining capacity under letters of credit facility																			$ 70