Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 243.5	$ 247.6	$ 410.1	$ 415.9
Foreign currency translation adjustment	355.4	21.1	461.2	670.5
Net change in fair value of net investment hedges, net of tax of $(48.8), $(6.9), $(38.1) and $28.6	(172.9)	47.5	(216.4)	(191.1)
Net change in fair value of cash flow hedges, net of tax of $5.9, $5.7, $6.8 and $21.4	(16.5)	(16.6)	(19.1)	(61.0)
Amounts reclassified to earnings of cash flow hedges, net of tax of $(2.5), $(1.8), $(3.8) and $(1.8)	7.3	5.2	11.0	5.1
Pension and post-retirement benefit plans, net of tax of $0, $0, $0.1 and $0	0.0	0.0	(0.1)	0.0
Amortization of prior service (credits) costs, net of tax of $0.3, $0.3, $0.6 and $0.6	(0.4)	(0.5)	(0.8)	(0.9)
Amortization of actuarial (gains) losses, net of tax of $0.8, $(0.1), $0.7 and $(0.1)	1.0	0.0	1.2	0.1
Other comprehensive income (loss)	173.9	56.7	237.0	422.7
Comprehensive income (loss)	417.4	304.3	647.1	838.6
Comprehensive income (loss) attributable to noncontrolling interests	0.4	0.9	0.8	1.8
Comprehensive income attributable to preferred unitholders	67.5	67.5	135.0	135.0
Comprehensive income (loss) attributable to common unitholders	$ 349.5	$ 235.9	$ 511.3	$ 701.8