Principles Of Consolidation (Fair Value Measurement) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted amounts held in escrow-current	$ 90.1	$ 20.0
Restricted amounts held in escrow-long term	0.6	102.5
Total assets at fair value	90.7	122.5
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted amounts held in escrow-current	0	0
Restricted amounts held in escrow-long term	0	0
Total assets at fair value	0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted amounts held in escrow-current	0	0
Restricted amounts held in escrow-long term	0	0
Total assets at fair value	0	0
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted amounts held in escrow-current	90.1	20.0
Restricted amounts held in escrow-long term	0.6	102.5
Total assets at fair value	$ 90.7	$ 122.5