Earnings Per Share (Schedule Of Reconciliation Of The Numerators Used In Calculating Earnings/(Loss) Per Share) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Earnings Per Share [Abstract]
Income/(loss) from continuing operations	$ 28,574		$ 34,152		$ (60,037)		$ 95,449
Income/(loss) from discontinued operations, net of tax	108	[1]	4,828	[1]	160	[1]	9,369	[1]
Net income/(loss)	28,682		38,980		(59,877)		104,818
Net income attributable to noncontrolling interest	2,875		2,875		8,563		8,563
Net income/(loss) available to common shareholders	25,807		36,105		(68,440)		96,255
Net income/(loss) from continuing operations available to common shareholders	$ 25,699		$ 31,277		$ (68,600)		$ 86,886

[1] Due to the nature of the subsidiary preferred stock issued by First Horizon Preferred Funding, LLC, First Horizon Preferred Funding II, LLC, and FTBNA, all components of Income/(loss) from discontinued operations, net of tax have been attributed solely to FHN as the controlling interest holder.