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Net Income Per Limited Partner Unit (Tables)
3 Months Ended
Mar. 31, 2021
Partners' Capital Notes [Abstract]  
Schedule of Allocation of Net Income Attributable to the Partnership to Arrive at Net Income Per Limited Partner Unit
The following tables show the allocation of net income attributable to the Partnership to arrive at net income per limited partner unit:
 
Three Months Ended
March 31,
2021 (1)
2020
Net income*$142 
Less:
Net income attributable to noncontrolling interests*
Net income attributable to the Partnership*138 
Less:
General partner’s distribution declared
*55 
Preferred unitholder’s interest in net income*— 
Limited partners’ distribution declared on common units*107 
Income less than distributions *$(24)
(1) Effective April 1, 2020, the classes of participating securities included only common units, as the general partner units and the IDRs were eliminated and the Series A Preferred Units are not considered a participating security. Therefore, the allocation of net income attributable to the Partnership to arrive at net income per limited partner unit is not applicable for the three months ended March 31, 2021.
Schedule of Basic and Diluted Net Income Per Unit
Three Months Ended March 31, 2021
Limited Partners’ Common Units
 (in millions of dollars, except per unit data)
Net income attributable to the Partnership’s common unitholders (basic)$151 
Dilutive effect of preferred units12 
Net income attributable to the Partnership’s common unitholders (diluted)$163 
Weighted average units outstanding - Basic393.3 
Dilutive effect of preferred units50.8 
Weighted average units outstanding - Diluted444.1 
Net income per limited partner unit:
Basic$0.38 
Diluted$0.37 

Three Months Ended March 31, 2020
General PartnerLimited Partners’ Common UnitsTotal
(in millions of dollars, except per unit data)
Distributions declared $55 $107 $162 
Distributions in excess of net income— (24)(24)
Net income attributable to the Partnership$55 $83 $138 
Weighted average units outstanding:
Basic and diluted233.3 
Net income per limited partner unit:
Basic and diluted$0.36