XML 54 R43.htm IDEA: XBRL DOCUMENT v3.10.0.1
SHARE-BASED COMPENSATION - Summary of RSU Activity (Details) - Restricted Stock Units (RSUs)
shares in Millions
6 Months Ended
Jun. 30, 2018
$ / shares
shares
Shares  
Unvested beginning balance (in shares) | shares 2.1
Granted (in shares) | shares 0.8
Vested (in shares) | shares (0.7)
Forfeited (in shares) | shares (0.1)
Unvested ending balance (in shares) | shares 2.1
Weighted Average Grant Date Fair Value  
Unvested beginning balance (usd per share) | $ / shares $ 209.55
Granted (usd per share) | $ / shares 419.66
Vested (usd per share) | $ / shares 191.87
Forfeited (usd per share) | $ / shares 257.10
Unvested ending balance (usd per share) | $ / shares $ 284.65