Exhibit 11

	Three months ended September 30,						Nine months ended September 30,
	2006			2005			2006			2005
	(Dollars, except per share amounts, and shares in thousands)


Income (Numerator):
Net income	$	76,483			91,411			298,276			256,145
Dividends applicable to preferred stock		(93	)		(99	)		(287	)		(298	)

Net income applicable to common stock		76,390			91,312			297,989			255,847
Interest on convertible debentures, net of tax		1,207			1,207			3,621			3,621
Dividends applicable to preferred stock		93			99			287			298

Net income as adjusted for purposes of computing diluted earnings per share	$	77,690			92,618			301,897			259,766

Shares (Denominator):
Weighted average number of shares:
Outstanding during period		115,952			130,433			118,366			131,054
Nonvested restricted stock		(731	)		(283	)		(681	)		(177	)

Number of shares for computing basic earnings per share		115,221			130,150			117,685			130,877

Incremental common shares attributable to dilutive securities:
Shares issuable under convertible securities		4,486			4,509			4,497			4,512
Shares issuable upon settlement of accelerated share repurchase agreements		-			825			486			344
Shares issuable under incentive compensation and employee benefit plans		741			432			680			410

Number of shares as adjusted for purposes of computing diluted earnings per share		120,448			135,916			123,348			136,143


Basic earnings per share	$	.66			.70			2.53			1.95

Diluted earnings per share	$	.65			.68			2.45			1.91