XML 94 R79.htm IDEA: XBRL DOCUMENT v3.21.1
Long-Term Debt (Narrative Interest Rate Swaps) (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Jan. 31, 2020
Interest Rate Swap | Designated as Hedging Instrument    
Debt Instrument [Line Items]    
Derivative, notional amount $ 200.0 $ 400.0