Share-Based Payments - Summary of Restricted Stock and RSU Vesting Dates (Details) - LTIP [Member]	Jun. 30, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	1,726,573
2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	802,037
2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	620,941
2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	303,595
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	123,237
Restricted Stock [Member] | 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	57,540
Restricted Stock [Member] | 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	60,803
Restricted Stock [Member] | 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	4,894
RSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	1,603,336
RSU [Member] | 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	744,497
RSU [Member] | 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	560,138
RSU [Member] | 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vesting (in shares)	298,701