Senior Long-Term Debt And Other Debt (Narrative) (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended
	Aug. 01, 2014 Subsequent Event [Member] Revolving Credit Facility [Member]	Aug. 01, 2014 Subsequent Event [Member] Revolving Credit Facility [Member]	Aug. 01, 2014 Subsequent Event [Member] Revolving Credit Facility [Member] Secured Letters Of Credit [Member]	Aug. 01, 2014 Subsequent Event [Member] Senior Credit Facility [Member]	Jun. 30, 2014 6.25% Unsecured Senior Notes [Member]	Jun. 30, 2014 7.20% Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					$ 350.0	$ 90.6
Debt instrument, interest rate					6.25%	7.20%
Line of credit facility, capacity available		300	200	650
Line of credit facility, potential increased maximum capacity	500
Previous line of credit facility, borrowing capacity		$ 300		$ 900