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Net Earnings per Common Unit
 12 Months Ended
Dec. 31, 2016
Earnings Per Unit [Abstract]  
Net Earnings per Common Unit
Net Earnings per Common Unit
Net earnings per common unit are based on the weighted-average number of common units outstanding during the period. The following table provides a calculation for net earnings per common unit for the years ended December 31, 2016, 2015 and 2014:
 
Year Ended December 31,
 
2016
 
2015
 
2014
 
(in millions, except per unit amounts)
Basic earnings per Common Unit:
 

 
 

 
 

Net earnings
$
209.3

 
$
306.9

 
$
370.0

Less: Net earnings allocable to General Partner
67.4

 
117.7

 
143.1

Less: Net earnings allocable to Class B common units
2.0

 
3.0

 
3.6

Net earnings allocable to common units
$
139.9

 
$
186.2

 
$
223.3

Weighted-average common units outstanding
18.5

 
18.5

 
18.5

Net earnings per common unit
$
7.56

 
$
10.06

 
$
12.07


There were no dilutive TNCLP units outstanding for the years ended December 31, 2016, 2015 and 2014.