We compute basic and diluted earnings per share based on the weighted-average number of shares of Common Stock and Class B common stock outstanding as follows:



For the years ended December 31,	2019					2018					2017
	Common Stock		Class B Common Stock			Common Stock		Class B Common Stock			Common Stock		Class B Common Stock
Basic earnings per share:
Numerator:
Allocation of distributed earnings (cash dividends paid)	$	445,685	$	164,627		$	410,732	$	151,789		$	385,878	$	140,394
Allocation of undistributed earnings	393,731		145,649			449,372		165,669			188,286		68,423
Total earnings—basic	$	839,416	$	310,276		$	860,104	$	317,458		$	574,164	$	208,817

Denominator (shares in thousands):
Total weighted-average shares—basic	148,841		60,614			149,379		60,614			151,625		60,620

Earnings Per Share—basic	$	5.64	$	5.12		$	5.76	$	5.24		$	3.79	$	3.44

Diluted earnings per share:
Numerator:
Allocation of total earnings used in basic computation	$	839,416	$	310,276		$	860,104	$	317,458		$	574,164	$	208,817
Reallocation of total earnings as a result of conversion of Class B common stock to Common stock	310,276		—			317,458		—			208,817		—
Reallocation of undistributed earnings	—		(886		)	—		(803		)	—		(492		)
Total earnings—diluted	$	1,149,692	$	309,390		$	1,177,562	$	316,655		$	782,981	$	208,325

Denominator (shares in thousands):
Number of shares used in basic computation	148,841		60,614			149,379		60,614			151,625		60,620
Weighted-average effect of dilutive securities:
Conversion of Class B common stock to Common shares outstanding	60,614		—			60,614		—			60,620		—
Employee stock options	785		—			651		—			1,144		—
Performance and restricted stock units	462		—			345		—			353		—
Total weighted-average shares—diluted	210,702		60,614			210,989		60,614			213,742		60,620

Earnings Per Share—diluted	$	5.46	$	5.10		$	5.58	$	5.22		$	3.66	$	3.44