Partners' Capital and Distributions - Exchange Rights and Shares Activity (Details) - shares	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020
Class A Shares
Activity for Class A shares, Class B shares and Class C shares
Balance, beginning of period (shares)	194,098,315	194,051,436	184,240,079	182,138,592
Exchange Right exercises (shares)	25,554	46,879		2,101,487
Other (shares)			20,099
Balance, end of period (shares)	194,123,869	194,098,315	184,260,178	184,240,079
Class B Shares
Activity for Class A shares, Class B shares and Class C shares
Balance, beginning of period (shares)	50,777,990	50,640,192	63,037,384	65,785,702
Conversion of AAP Management Units (shares)		414,608	35,349	559,768
Exchange Right exercises (shares)	(25,554)	(46,879)		(2,101,487)
Redemption Right exercises (shares)	(535,009)	(229,931)	(40,679)	(1,206,599)
Balance, end of period (shares)	50,217,427	50,777,990	63,032,054	63,037,384
Class C Shares
Activity for Class A shares, Class B shares and Class C shares
Balance, beginning of period (shares)	547,623,124	547,717,762	550,769,169	549,538,139
Redemption Right exercises (shares)	535,009	229,931	40,679	1,206,599
Repurchase of common units by a subsidiary under Common Equity Repurchase Program (shares)	(4,940,592)	(350,000)
Other (shares)	256,321	25,431	27,292	24,431
Balance, end of period (shares)	543,473,862	547,623,124	550,837,140	550,769,169