Partners' Capital and Distributions - Exchange Rights and Shares Activity (Details) - shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Class A Shares
Activity for Class A shares and Class B shares
Balance, beginning of period (shares)	101,206,526	86,099,037
Exchange Right exercises (shares)	479,298	14,065,812
Sales of Class A shares (shares)	50,086,326
Other (shares)	7,810
Issuance of Class A shares under LTIP (shares)		7,811
Balance, end of period (shares)	151,779,960	100,172,660
Class B Shares
Activity for Class A shares and Class B shares
Balance, beginning of period (shares)	138,043,486	141,485,588
Conversion of AAP Management Units (shares)	276,405	6,742,383
Exchange Right exercises (shares)	(479,298)	(14,065,812)
Redemption Right exercises (shares)	(3,454,374)
Balance, end of period (shares)	134,386,219	134,162,159
Class C Shares
Activity for Class A shares and Class B shares
Balance, beginning of period (shares)	491,910,863
Redemption Right exercises (shares)	3,454,374
Sales of common units by a subsidiary (shares)	4,033,567
Issuance of Series A preferred units by a subsidiary (shares)	1,287,773
Other (shares)	82,872
Balance, end of period (shares)	500,769,449