Share-Based Payment Awards - Narrative (Details) - 2012 Plan	3 Months Ended
	Mar. 31, 2020
Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Employee | Time-based and market-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Granted prior to 2018 | Non-employee Director | Time-based and market-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
2018 Grants | Non-employee Director | Time-based and market-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year