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Stock Compensation - RSU and PSU award activity (Details)
 12 Months Ended
Dec. 31, 2021
$ / shares
shares
Shares Subject to Outstanding Options, Shares  
Outstanding at the beginning of the period (in shares) | shares 3,284,583
Outstanding at the end of the period (in shares) | shares 3,966,888
Shares Subject to Outstanding Options, Weighted Average Exercise Price  
Outstanding at the beginning of the period (in dollars per share) | $ / shares $ 87.42
Outstanding at the end of the period (in dollars per share) | $ / shares $ 84.91
Restricted Stock Units (RSUs) [Member]  
Shares Subject to Outstanding Options, Shares  
Granted (in shares) | shares 2,102,386
Released (in shares) | shares (857,367)
Cancelled (in shares) | shares (409,333)
Shares Subject to Outstanding Options, Weighted Average Exercise Price  
Granted (in dollars per share) | $ / shares $ 82.39
Released (in dollars per share) | $ / shares 87.82
Cancelled (in dollars per share) | $ / shares $ 89.17
Performance Stock Units (PSUs)  
Shares Subject to Outstanding Options, Shares  
Granted (in shares) | shares 214,449
Released (in shares) | shares (200,353)
Cancelled (in shares) | shares (167,477)
Shares Subject to Outstanding Options, Weighted Average Exercise Price  
Granted (in dollars per share) | $ / shares $ 74.26
Released (in dollars per share) | $ / shares 68.08
Cancelled (in dollars per share) | $ / shares $ 72.48