Equity - Share Repurchase Program and Share Repurchase Activity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stockholders' Equity Note [Abstract]
Stock repurchase program, authorized amount	$ 1,200,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 700,000,000
Number of shares repurchased (in shares)	417,707	212,424
Cash paid for repurchased shares	$ 73,164,000	$ 44,839,000
Treasury stock, average price paid per share (in dollars per share)	$ 151.22	$ 140.46