Organization and Significant Accounting Policies (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011
Summary of Significant Accounting Policies [Line Items]
Expected amortization of finite lived intangible assets, years		7.8
Interest Expense [Member]
Summary of Significant Accounting Policies [Line Items]
Restatement impact	$ 175.5	$ 356.4
Nonoperating Income Expense [Member]
Summary of Significant Accounting Policies [Line Items]
Restatement impact	$ 175.5	$ 356.4