XML 82 R69.htm IDEA: XBRL DOCUMENT v3.8.0.1
Share and Unit-Based Plans - Nonvested Equity Awards (Details)
 3 Months Ended
Mar. 31, 2018
$ / shares
shares
LTIP Units  
Units  
Balance at beginning of period (in shares) | shares 636,632
Granted (in shares) | shares 479,499.000
Vested (in shares) | shares (99,407)
Forfeited (in shares) | shares 0
Balance at end of period (in shares) | shares 1,016,724
Value  
Balance at beginning of period (in dollars per share) | $ / shares $ 52.36
Granted (in dollars per share) | $ / shares 51.03
Vested (in dollars per share) | $ / shares 59.04
Forfeited (in dollars per share) | $ / shares 0.00
Balance at end of period (in dollars per share) | $ / shares $ 51.08
Phantom Stock Units  
Units  
Balance at beginning of period (in shares) | shares 4,054
Granted (in shares) | shares 4,366
Vested (in shares) | shares (3,639)
Forfeited (in shares) | shares (790)
Balance at end of period (in shares) | shares 3,991
Value  
Balance at beginning of period (in dollars per share) | $ / shares $ 79.82
Granted (in dollars per share) | $ / shares 63.03
Vested (in dollars per share) | $ / shares 70.71
Forfeited (in dollars per share) | $ / shares 80.20
Balance at end of period (in dollars per share) | $ / shares $ 69.67
Stock Units  
Units  
Balance at beginning of period (in shares) | shares 151,355
Granted (in shares) | shares 82,782
Vested (in shares) | shares (102,596)
Forfeited (in shares) | shares 0
Balance at end of period (in shares) | shares 131,541
Value  
Balance at beginning of period (in dollars per share) | $ / shares $ 73.32
Granted (in dollars per share) | $ / shares 59.00
Vested (in dollars per share) | $ / shares 73.42
Forfeited (in dollars per share) | $ / shares 0.00
Balance at end of period (in dollars per share) | $ / shares $ 64.24