Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of earnings per share

The following table sets forth the computation of basic and diluted net income per share of Class A and Class B common stock and Class C capital stock (in millions, except share amounts which are reflected in thousands, and per share amounts, unaudited):

	Three Months Ended March 31,
	2018								2019
	Class A			Class B			Class C		Class A			Class B			Class C
Basic net income per share:
Numerator
Allocation of undistributed earnings	$	4,039		$	635		$	4,727	$	2,865		$	446		$	3,346
Denominator
Number of shares used in per share computation	298,449			46,956			349,347		299,042			46,582			349,245
Basic net income per share	$	13.53		$	13.53		$	13.53	$	9.58		$	9.58		$	9.58
Diluted net income per share:
Numerator
Allocation of undistributed earnings for basic computation	$	4,039		$	635		$	4,727	$	2,865		$	446		$	3,346
Reallocation of undistributed earnings as a result of conversion of Class B to Class A shares	635			0			0		446			0			0
Reallocation of undistributed earnings	(57		)	(9		)	57		(23		)	(4		)	23
Allocation of undistributed earnings	$	4,617		$	626		$	4,784	$	3,288		$	442		$	3,369
Denominator
Number of shares used in basic computation	298,449			46,956			349,347		299,042			46,582			349,245
Weighted-average effect of dilutive securities
Add:
Conversion of Class B to Class A common shares outstanding	46,956			0			0		46,582			0			0
Restricted stock units and other contingently issuable shares	898			0			9,484		510			0			5,500
Number of shares used in per share computation	346,303			46,956			358,831		346,134			46,582			354,745
Diluted net income per share	$	13.33		$	13.33		$	13.33	$	9.50		$	9.50		$	9.50