Mezzanine Equity (Sensitivity Analysis Of Fair Value Of Redeemable Noncontrolling Interests Using Discount And Terminal Growth Rates) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate assumed in determining fair value	12.53%
Terminal growth rate assumed in determining fair value	2.00%
Rate 12.28% Discount Rate [Member] | Rate 1.75% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	$ 233.4
Discount rate assumed in determining fair value	12.28%
Terminal growth rate assumed in determining fair value	1.75%
Rate 12.28% Discount Rate [Member] | Rate 2.00% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	236.5
Discount rate assumed in determining fair value	12.28%
Terminal growth rate assumed in determining fair value	2.00%
Rate 12.28% Discount Rate [Member] | Rate 2.25% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	239.7
Discount rate assumed in determining fair value	12.28%
Terminal growth rate assumed in determining fair value	2.25%
Rate 12.53% Discount Rate [Member] | Rate 1.75% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	225.8
Discount rate assumed in determining fair value	12.53%
Terminal growth rate assumed in determining fair value	1.75%
Rate 12.53% Discount Rate [Member] | Rate 2.00% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	228.7
Discount rate assumed in determining fair value	12.53%
Terminal growth rate assumed in determining fair value	2.00%
Rate 12.53% Discount Rate [Member] | Rate 2.25% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	231.7
Discount rate assumed in determining fair value	12.53%
Terminal growth rate assumed in determining fair value	2.25%
Rate 12.78% Discount Rate [Member] | Rate 1.75% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	218.6
Discount rate assumed in determining fair value	12.78%
Terminal growth rate assumed in determining fair value	1.75%
Rate 12.78% Discount Rate [Member] | Rate 2.00% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	221.3
Discount rate assumed in determining fair value	12.78%
Terminal growth rate assumed in determining fair value	2.00%
Rate 12.78% Discount Rate [Member] | Rate 2.25% Terminal Growth Rates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of redeemable noncontrolling interests	$ 224.1
Discount rate assumed in determining fair value	12.78%
Terminal growth rate assumed in determining fair value	2.25%