Partners' Capital and Distributions - Exchange Rights and Shares Activity (Details) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Class A Shares
Activity for Class A shares, Class B shares and Class C shares
Balance, beginning of period (shares)	182,138,592	159,485,588
Exchange Right exercises (shares)	2,101,487
Balance, end of period (shares)	184,240,079	159,485,588
Class B Shares
Activity for Class A shares, Class B shares and Class C shares
Balance, beginning of period (shares)	65,785,702	119,604,338
Conversion of AAP Management Units (shares)	559,768
Exchange Right exercises (shares)	(2,101,487)
Redemption Right exercises (shares)	(1,206,599)	(91,672)
Balance, end of period (shares)	63,037,384	119,512,666
Class C Shares
Activity for Class A shares, Class B shares and Class C shares
Balance, beginning of period (shares)	549,538,139	516,938,280
Redemption Right exercises (shares)	1,206,599	91,672
Other (shares)	24,431	226,814
Balance, end of period (shares)	550,769,169	517,256,766