Borrowings - Partnership's Borrowings (Parenthetical) (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Term Loan Due 8/09/2018 [Member]
Borrowings [Line Items]
Loan Maturity	Aug. 09, 2018	Aug. 09, 2018
Term Loan [Member]
Borrowings [Line Items]
Loan Maturity	Sep. 28, 2018
3.875% Senior Notes Due 2023 [Member]
Borrowings [Line Items]
Loan Maturity	Feb. 01, 2023	Feb. 01, 2023
Interest rate on senior notes	3.875%	3.875%
5.625% Senior Notes Due 2043 [Member]
Borrowings [Line Items]
Loan Maturity	Mar. 30, 2043	Mar. 30, 2043
Interest rate on senior notes	5.625%	5.625%