Stock-Based Compensation Plans (Vested Restricted Stocks) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market Price at Vesting Date (in shares)	$ 25	$ 22	$ 20
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	1,133,031	1,042,169	856,645
Restricted Stock | 1 Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	39,627	0	0
Market Price at Vesting Date (in shares)	$ 22.19
Restricted Stock | 3 Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	64,718	0	0
Market Price at Vesting Date (in shares)	$ 20.40
Restricted Stock | 3 Years | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market Price at Vesting Date (in shares)	20.40	$ 20.21	$ 18.97
Restricted Stock | 3 Years | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market Price at Vesting Date (in shares)	$ 28.98	$ 23.14	$ 21.33
Restricted Stock | 4 Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	773,698	762,749	628,015
Restricted Stock | 4 Years | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market Price at Vesting Date (in shares)	$ 20.68	$ 20.21	$ 18.97
Restricted Stock | 4 Years | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market Price at Vesting Date (in shares)	$ 28.98	$ 23.14	$ 21.33
Restricted Stock | 5 Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	254,988	279,420	228,630
Restricted Stock | 5 Years | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market Price at Vesting Date (in shares)	$ 20.68	$ 20.21	$ 18.97
Restricted Stock | 5 Years | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market Price at Vesting Date (in shares)	$ 28.98	$ 23.14	$ 21.33