Stock-Based Compensation - Performance Shares Granted During the Period (Details) - $ / shares	1 Months Ended	9 Months Ended
	Feb. 29, 2020	Sep. 30, 2020
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (USD per share)	$ 143.45
2020 Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based criteria plan payout percentage, over/under		50.00%
2020 Grant | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (USD per share)		$ 143.45
2020 Grant | Minimum | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based criteria plan payout percentage		0.00%
2020 Grant | Maximum | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based criteria plan payout percentage		200.00%