Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income including noncontrolling interest	[1]	$ 52.3	$ 54.6
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities:
Depreciation and amortization	[1]	18.4	13.4
Provision for bad debt	[1]	1.5	1.3
Share-based payment award compensation costs	[1]	4.1	4.2
Deferred income tax provision (benefit)	[1]	3.4	(3.7)
Extinguishment of liabilities	[1]	(1.8)	(3.7)
Foreign currency losses (gains), net	[1]	6.2	(5.2)
Other	[1]	1.4	4.1
Changes in assets and liabilities, net of acquisitions:
Accounts receivable, net	[1]	142.9	85.6
Inventories	[1]	26.1	13.0
Prepaid expenses	[1]	11.7	20.6
Short-term derivative assets, net	[1]	91.8	74.3
Other current assets	[1]	(11.0)	(25.5)
Cash collateral with financial counterparties	[1]	54.0	43.6
Other non-current assets	[1]	7.1	(1.4)
Accounts payable	[1]	(191.2)	(91.9)
Customer deposits	[1]	(23.6)	(33.3)
Accrued expenses and other current liabilities	[1]	(48.1)	(35.7)
Non-current income tax, net and other long-term liabilities	[1]	(6.7)	(7.4)
Total adjustments	[1]	86.2	52.3
Net cash provided by operating activities	[1]	138.5	106.9
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired and other investments	[1]	(45.3)	(3.7)
Capital expenditures	[1]	(14.1)	(13.1)
Other investing activities, net	[1]	6.9	5.3
Net cash used in investing activities	[1]	(52.5)	(11.5)
Cash flows from financing activities:
Borrowings of debt	[1]	689.6	1,349.1
Repayments of debt	[1]	(664.6)	(1,342.4)
Dividends paid on common stock	[1]	(4.2)	(2.6)
Federal and state tax benefits resulting from tax deductions in excess of the compensation cost recognized for share-based payment awards	[1]		0.9
Purchases of common stock tendered by employees to satisfy the required withholding taxes related to share-based payment awards	[1]	(0.9)	(4.0)
Other financing activities, net	[1]	(0.2)	(3.4)
Net cash provided by (used in) financing activities	[1]	19.7	(2.4)
Effect of exchange rate changes on cash and cash equivalents	[1]	1.5	(4.3)
Net increase in cash and cash equivalents	[1]	107.2	88.7
Cash and cash equivalents, as of beginning of period	[1]	582.5	302.3
Cash and cash equivalents, as of end of period	[1]	$ 689.7	$ 391.0

[1] Amounts may not add due to rounding