Share Repurchase Program and Treasury Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Stock Repurchase Program, Additional Authorized Amount			$ 2,000,000
Share Repurchase Program and Treasury Stock (Textuals) [Abstract]
Authorized amount under share repurchase program	$ 1,100,000
Shares Purchased Under Share Repurchase Program	28,900,000
Repurchases of common stock	$ (200,000)	$ (186,250)
Number of shares repurchased	(268,161)	(290,429)
Average price of share repurchased, per share	$ 745.80	$ 641.27
Exercise of stock options and restricted stock units, shares reissued	50,372	171,752