Fair Value (Schedule Of Level 3 Assets Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	$ 15.0		$ 36.3
Realized and unrealized gains/(losses) included in earnings	0	[1]	1.7	[1]
Purchases	0.2		3.0
Sales and redemptions	(0.6)		(23.2)
Maturities and paydowns	(0.8)		(3.8)
Transfers in			9.4	[2]
Transfers out	(5.9)	[3]	(8.6)	[2]
Balance, end of period	8.5		15.0
Agency Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period			1.5
Realized and unrealized gains/(losses) included in earnings			0	[1]
Purchases			0
Sales and redemptions			(4.3)
Maturities and paydowns			0
Transfers in			4.3	[2]
Transfers out			(1.5)	[2]
Balance, end of period			0
Corporate Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	5.2		18.5
Realized and unrealized gains/(losses) included in earnings	0	[1]	0	[1]
Purchases	0.2		3.0
Sales and redemptions	(0.6)		(11.2)
Maturities and paydowns	0		(3.8)
Transfers in			5.1	[2]
Transfers out	(4.8)	[3]	(6.5)	[2]
Balance, end of period	0		5.2
Asset-Backed And Mortgage-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	3.5		4.8
Realized and unrealized gains/(losses) included in earnings	0	[1]	0.1	[1]
Purchases	0		0
Sales and redemptions	0		(1.2)
Maturities and paydowns	(0.7)		0
Transfers in			0	[2]
Transfers out	(1.1)	[3]	(0.6)	[2]
Balance, end of period	1.8		3.5
Auction Rate Securities - Municipal Debt [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	3.3		8.2
Realized and unrealized gains/(losses) included in earnings	0	[1]	1.6	[1]
Purchases	0		0
Sales and redemptions	0		(6.5)
Maturities and paydowns	(0.1)		0
Transfers in			0	[2]
Transfers out	0	[3]	0	[2]
Balance, end of period	3.4		3.3
Auction Rate Securities - Preferred [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	3.0		3.3
Realized and unrealized gains/(losses) included in earnings	0	[1]	0	[1]
Purchases	0		0
Sales and redemptions	0		0
Maturities and paydowns	0		0
Transfers in			0	[2]
Transfers out	0	[3]	0	[2]
Balance, end of period	3.3		3.0
OTTI Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0.1		(0.9)
OTTI Securities [Member] | Agency Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI			0
OTTI Securities [Member] | Corporate Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0		0
OTTI Securities [Member] | Asset-Backed And Mortgage-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0.1		0.1
OTTI Securities [Member] | Auction Rate Securities - Municipal Debt [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0		(1.0)
OTTI Securities [Member] | Auction Rate Securities - Preferred [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0		0
All Other Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0.5		1.1
All Other Securities [Member] | Agency Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI			0
All Other Securities [Member] | Corporate Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0		0.1
All Other Securities [Member] | Asset-Backed And Mortgage-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0		0.3
All Other Securities [Member] | Auction Rate Securities - Municipal Debt [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	0.2		1.0
All Other Securities [Member] | Auction Rate Securities - Preferred [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized gains/(losses) included in OCI	$ 0.3		$ (0.3)

[1] Included in Other expense (income), net on the Consolidated Statements of Earnings

[2] Transfers in and out of Level 3 were on a gross basis. Transfers into Level 3 resulted from the Company being unable to corroborate the prices of these securities with a sufficient level of observable market data to maintain Level 2 classification. Transfers out of Level 3 resulted from the Company being able to obtain information demonstrating that the prices were observable in the market during the periods shown.

[3] Transfers out of Level 3 were on a gross basis. Transfers out of Level 3 resulted from the Company being able to obtain information demonstrating that the prices were observable in the market during the periods shown.