Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Supplemental Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 102.1	$ 171.8	$ 132.5	$ 153.7
Restricted cash	17.2	27.2
Accounts receivable, net	470.6	468.4
Notes receivable, net	163.1	188.7
Inventories	243.8	265.6
Other current assets	272.7	256.3
Long-term notes receivable	868.4	1,012.8
Investment in subsidiaries	0.0	0.0
Goodwill	3,485.2	4,108.3		1,183.1
Intangible assets, net	1,940.8	2,251.6
Intercompany balances	0.0	0.0
Software, net	527.0	592.7
Other assets	524.2	651.8
Total assets	8,615.1	9,995.2
Liabilities and stockholders' equity
Debt payments due within one year	50.4	50.6
Other current liabilities	564.0	609.7
Long-term debt, excluding current installments	8,359.8	8,465.4
Other long-term liabilities	621.7	865.6
Intercompany balances	0.0	0.0
Stockholders’ (deficit) equity	(980.8)	3.9
Total liabilities and stockholders’ (deficit) equity	8,615.1	9,995.2
Parent Company
Assets
Cash and cash equivalents	17.3	37.9	36.4	56.0
Restricted cash	0.0	0.0
Accounts receivable, net	0.0	0.0
Notes receivable, net	0.0	0.0
Inventories	0.0	0.0
Other current assets	17.7	65.4
Long-term notes receivable	2.0	0.5
Investment in subsidiaries	3,562.2	4,730.7
Goodwill	0.0	0.0
Intangible assets, net	145.8	162.0
Intercompany balances	0.0	0.0
Software, net	20.0	15.6
Other assets	4.0	2.8
Total assets	3,769.0	5,014.9
Liabilities and stockholders' equity
Debt payments due within one year	0.0	0.0
Other current liabilities	47.8	68.9
Long-term debt, excluding current installments	250.0	250.0
Other long-term liabilities	54.0	136.2
Intercompany balances	4,397.9	4,555.9
Stockholders’ (deficit) equity	(980.7)	3.9
Total liabilities and stockholders’ (deficit) equity	3,769.0	5,014.9
SGI
Assets
Cash and cash equivalents	0.0	0.1	0.3	0.0
Restricted cash	0.0	0.0
Accounts receivable, net	78.9	61.8
Notes receivable, net	0.0	0.0
Inventories	35.9	35.2
Other current assets	26.6	20.2
Long-term notes receivable	110.4	119.5
Investment in subsidiaries	876.9	953.4
Goodwill	253.6	253.6
Intangible assets, net	40.4	42.2
Intercompany balances	6,514.7	6,580.0
Software, net	32.4	32.9
Other assets	223.9	255.4
Total assets	8,193.7	8,354.3
Liabilities and stockholders' equity
Debt payments due within one year	43.0	43.0
Other current liabilities	167.7	119.8
Long-term debt, excluding current installments	8,089.2	8,187.7
Other long-term liabilities	58.9	74.0
Intercompany balances	0.0	(0.1)
Stockholders’ (deficit) equity	(165.1)	(70.1)
Total liabilities and stockholders’ (deficit) equity	8,193.7	8,354.3
Guarantor Subsidiaries
Assets
Cash and cash equivalents	6.8	28.8	11.3	24.4
Restricted cash	17.1	27.1
Accounts receivable, net	204.1	212.9
Notes receivable, net	108.6	136.6
Inventories	108.9	133.8
Other current assets	166.9	114.7
Long-term notes receivable	548.8	660.4
Investment in subsidiaries	758.2	975.2
Goodwill	2,311.8	2,781.6
Intangible assets, net	1,511.6	1,761.8
Intercompany balances	0.0	0.0
Software, net	413.2	467.3
Other assets	72.5	96.8
Total assets	6,228.5	7,397.0
Liabilities and stockholders' equity
Debt payments due within one year	0.0	0.0
Other current liabilities	221.9	247.2
Long-term debt, excluding current installments	0.0	0.0
Other long-term liabilities	455.0	593.7
Intercompany balances	1,886.0	1,637.9
Stockholders’ (deficit) equity	3,665.6	4,918.2
Total liabilities and stockholders’ (deficit) equity	6,228.5	7,397.0
Non-Guarantor Subsidiaries
Assets
Cash and cash equivalents	78.0	105.0	84.5	73.3
Restricted cash	0.1	0.1
Accounts receivable, net	187.6	193.7
Notes receivable, net	54.5	52.1
Inventories	114.5	124.4
Other current assets	61.5	56.0
Long-term notes receivable	216.7	241.7
Investment in subsidiaries	0.0	0.0
Goodwill	919.8	1,073.1
Intangible assets, net	243.0	285.6
Intercompany balances	0.0	0.0
Software, net	61.4	76.9
Other assets	223.8	296.8
Total assets	2,160.9	2,505.4
Liabilities and stockholders' equity
Debt payments due within one year	7.4	7.6
Other current liabilities	126.6	173.8
Long-term debt, excluding current installments	20.6	27.7
Other long-term liabilities	53.8	61.7
Intercompany balances	230.7	386.3
Stockholders’ (deficit) equity	1,721.8	1,848.3
Total liabilities and stockholders’ (deficit) equity	2,160.9	2,505.4
Eliminating Entries
Assets
Cash and cash equivalents	0.0	0.0	$ 0.0	$ 0.0
Restricted cash	0.0	0.0
Accounts receivable, net	0.0	0.0
Notes receivable, net	0.0	0.0
Inventories	(15.5)	(27.8)
Other current assets	0.0	0.0
Long-term notes receivable	(9.5)	(9.3)
Investment in subsidiaries	(5,197.3)	(6,659.3)
Goodwill	0.0	0.0
Intangible assets, net	0.0	0.0
Intercompany balances	(6,514.7)	(6,580.0)
Software, net	0.0	0.0
Other assets	0.0	0.0
Total assets	(11,737.0)	(13,276.4)
Liabilities and stockholders' equity
Debt payments due within one year	0.0	0.0
Other current liabilities	0.0	0.0
Long-term debt, excluding current installments	0.0	0.0
Other long-term liabilities	0.0	0.0
Intercompany balances	(6,514.6)	(6,580.0)
Stockholders’ (deficit) equity	(5,222.4)	(6,696.4)
Total liabilities and stockholders’ (deficit) equity	$ (11,737.0)	$ (13,276.4)