Commitments, Contingencies and Off-Balance Sheet Arrangements - Contractual Obligations (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Note Purchase Agreements [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2014	$ 100.0
Contractual Obligations, Payments Due by Period, 2015
Contractual Obligations, Payments Due by Period, 2016	50.0
Contractual Obligations, Payments Due by Period, 2017	300.0
Contractual Obligations, Payments Due by Period, 2018	50.0
Contractual Obligations, Payments Due by Period, Thereafter	425.0
Total	925.0
Credit Agreement [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2014	530.5
Contractual Obligations, Payments Due by Period, 2015
Contractual Obligations, Payments Due by Period, 2016
Contractual Obligations, Payments Due by Period, 2017
Contractual Obligations, Payments Due by Period, 2018
Contractual Obligations, Payments Due by Period, Thereafter
Total	530.5
Total Debt Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2014	681.6
Contractual Obligations, Payments Due by Period, 2015	44.1
Contractual Obligations, Payments Due by Period, 2016	94.1
Contractual Obligations, Payments Due by Period, 2017	341.2
Contractual Obligations, Payments Due by Period, 2018	71.9
Contractual Obligations, Payments Due by Period, Thereafter	479.7
Total	1,712.6
Operating Lease Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2014	74.0
Contractual Obligations, Payments Due by Period, 2015	65.7
Contractual Obligations, Payments Due by Period, 2016	53.4
Contractual Obligations, Payments Due by Period, 2017	42.0
Contractual Obligations, Payments Due by Period, 2018	28.3
Contractual Obligations, Payments Due by Period, Thereafter	86.9
Total	350.3
Less Sublease Arrangements [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2014	(1.8)
Contractual Obligations, Payments Due by Period, 2015	(0.8)
Contractual Obligations, Payments Due by Period, 2016	(0.1)
Contractual Obligations, Payments Due by Period, 2017
Contractual Obligations, Payments Due by Period, 2018
Contractual Obligations, Payments Due by Period, Thereafter
Total	(2.7)
Outstanding Purchase Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2014	22.6
Contractual Obligations, Payments Due by Period, 2015	15.4
Contractual Obligations, Payments Due by Period, 2016	9.3
Contractual Obligations, Payments Due by Period, 2017	0.9
Contractual Obligations, Payments Due by Period, 2018	0.3
Contractual Obligations, Payments Due by Period, Thereafter
Total	48.5
Total Contractual Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2014	776.4
Contractual Obligations, Payments Due by Period, 2015	124.4
Contractual Obligations, Payments Due by Period, 2016	156.7
Contractual Obligations, Payments Due by Period, 2017	384.1
Contractual Obligations, Payments Due by Period, 2018	100.5
Contractual Obligations, Payments Due by Period, Thereafter	566.6
Total	2,108.7
Interest on Debt [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2014	51.1
Contractual Obligations, Payments Due by Period, 2015	44.1
Contractual Obligations, Payments Due by Period, 2016	44.1
Contractual Obligations, Payments Due by Period, 2017	41.2
Contractual Obligations, Payments Due by Period, 2018	21.9
Contractual Obligations, Payments Due by Period, Thereafter	54.7
Total	$ 257.1