Equity - Summary of Capital Stock Activity (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Common stock, shares issued (in shares)	185,983,792	185,983,792	185,983,792	185,983,792
Treasury Stock [Roll Forward]
Treasury stock, shares, beginning (in shares)	53,702,178	51,653,236	52,293,686
Stock options and awards (in shares)	(1,563,307)	(390,553)	(640,450)
Repurchases of common stock, net (in shares)	4,720,627	2,439,495
Treasury stock, shares, ending (in shares)	56,859,498	53,702,178	51,653,236