XML 92 R60.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Stock-Based Compensation (Summary Of Non-Vested Stock Award Activity Under Incentive Plan) (Details)
shares in Thousands
12 Months Ended
Dec. 31, 2019
$ / shares
shares
Restricted Stock Units - 2011 Stock Incentive Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding, beginning of year, Shares | shares 154
Outstanding, beginning of year, Grant Date Fair Value | $ / shares $ 352.85
Granted, Shares | shares 28
Granted, Grant Date Fair Value | $ / shares $ 627.94
Vested, Shares | shares (46)
Vested, Grant Date Fair Value | $ / shares $ 388.08
Forfeited, Shares | shares (15)
Forfeited, Grant Date Fair Value | $ / shares $ 303.84
Outstanding, end of year, Shares | shares 121
Outstanding, end of year, Grant Date Fair Value | $ / shares $ 408.56
Vested and expected to vest, end of year, Shares | shares 113
Vested and expected to vest, end of year, Grant Date Fair Value | $ / shares $ 401.74
Performance Shares - 2011 Stock Incentive Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding, beginning of year, Shares | shares 70
Outstanding, beginning of year, Grant Date Fair Value | $ / shares $ 418.52
Granted, Shares | shares 46
Granted, Grant Date Fair Value | $ / shares $ 583.13
Vested, Shares | shares 0
Vested, Grant Date Fair Value | $ / shares $ 0
Expired, Shares | shares (13)
Expired, Grant Date Fair Value | $ / shares $ 518.62
Outstanding, end of year, Shares | shares 103
Outstanding, end of year, Grant Date Fair Value | $ / shares $ 479.83
Vested and expected to vest, end of year, Shares | shares 227
Vested and expected to vest, end of year, Grant Date Fair Value | $ / shares $ 479.61