Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Earnings per share

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2011			2010		2011			2010
				(In millions)
Numerator:
Net income, as reported	$	291		$	263	$	539		$	495
Less: Net income attributable to participating securities		(1	)		—		(1	)		—
Net income available to common shareholders	$	290		$	263	$	538		$	495
Denominator:
Basic EPS- weighted average shares		141.79			152.04		143.28			153.29
Effect of dilutive securities:
Stock Options and SARS		0.17			0.18		0.29			0.17
Diluted EPS- adjusted weighted average shares and assumed conversions		141.96			152.22		143.57			153.46
Earnings Per Share:
Basic	$	2.05		$	1.73	$	3.75		$	3.23
Diluted	$	2.05		$	1.73	$	3.75		$	3.22