Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation (Schedule of Cash-Settleable RSUs Outstanding) (Details)

v3.10.0.1
Share-Based Compensation (Schedule of Cash-Settleable RSUs Outstanding) (Details) - Cash-settleable RSU awards
shares in Thousands
 12 Months Ended
Dec. 31, 2018
shares
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs base units outstanding 659
Minimum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 163
Maximum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 1,155
Vesting in 2019  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs base units outstanding 190
Vesting in 2019 | Minimum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 17
Vesting in 2019 | Maximum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 364
Vesting in 2020  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs base units outstanding 323
Vesting in 2020 | Minimum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 0
Vesting in 2020 | Maximum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 645
Vesting in 2021  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs base units outstanding 0
Vesting in 2021 | Minimum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 0
Vesting in 2021 | Maximum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 0
Other  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs base units outstanding 146
Other | Minimum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 146
Other | Maximum  
Defined Benefit Plan Disclosure [Line Items]  
Cash-settleable RSUs potential units vesting 146