XML 97 R83.htm IDEA: XBRL DOCUMENT v3.19.1
Fair Value - Other non-financial assets (Details) - Other Non-financial Assets - Significant Unobservable Inputs (Level 3) - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Fair value measurement on non-recurring basis using significant unobservable inputs (Level 3)    
Beginning balances $ 905,235 $ 938,324
Total income (expense):    
Included in net income - realized (14,109) (34,128)
Acquired during the period 2,815 1,212
Retirement adjustments during the period (95) (173)
Ending balances $ 893,846 $ 905,235