XML 24 R82.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Long-Term Debt Long-Term Debt - Unconditional Purchase Commitments (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Debt Disclosure [Abstract]  
2019 $ 41.3
2020 13.7
2021 11.8
2022 10.0
2023 5.1
Thereafter 53.4
Total Unconditional Purchase Commitments $ 135.3