Long Term Debt and Redeemable Preferred Stock - Aggregate Amount Of Contractual Long Term Debt Maturities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Disclosure Long Term Debt And Redeemable Preferred Stock Aggregate Amount Of Contractual Long Term Debt Maturities [Abstract]
2014	$ 65.4	[1]
2015	7.0	[2]
2016	7.1	[2]
2017	682.1	[3]
2018	7.1	[2]
Thereafter	1,165.6	[4]
Total long-term debt	1,934.3
Discounts	(6.6)
Total long-term debt, net of discounts	$ 1,927.7		$ 1,167.3

[1] Amount includes the $58.4 million aggregate principal amount outstanding under the Non-Contributed Loan which matures on October 8, 2014 and the quarterly amortization payments required under the Acquisition Term Loan.

[2] Amount includes the quarterly amortization payments required under the Acquisition Term Loan.

[3] Amount includes the $675 million aggregate principal amount outstanding as of December 31, 2013 under the 2011 Term Loan which matures on November 19, 2017 and the quarterly amortization payments required under the Acquisition Term Loan.

[4] Amount is comprised of (i) the aggregate principal amount expected to be outstanding under the $700 million Acquisition Term Loan assuming a maturity date of October 9, 2019 and (ii) the $500 million aggregate principal amount outstanding as of December 31, 2013 under the 5¾% Senior Notes, which mature on February 21, 2021.