Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Supplemental Condensed Consolidating Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 151.2	$ 171.8	$ 169.1	$ 153.7
Restricted cash	27.5	27.2
Accounts receivable, net	463.8	468.4
Notes receivable, net	168.1	188.7
Inventories	261.8	265.6
Other current assets	260.8	256.3
Long-term notes receivable	967.7	1,012.8
Investment in subsidiaries	0	0
Goodwill	4,031.0	4,108.3		1,183.1
Intangible assets, net	2,203.7	2,251.6
Intercompany balances	0	0
Software, net	561.3	592.7
Other assets	606.5	651.8
Total assets	9,703.4	9,995.2
Liabilities and stockholders' equity
Debt payments due within one year	50.4	50.6
Other current liabilities	595.9	609.7
Long-term debt, excluding current installments	8,447.8	8,465.4
Other long-term liabilities	798.7	865.6
Intercompany balances	0	0
Stockholders’ (deficit) equity	(189.4)	3.9
Total liabilities and stockholders’ (deficit) equity	9,703.4	9,995.2
Parent Company
Assets
Cash and cash equivalents	57.7	37.9	42.7	56.0
Restricted cash	0	0
Accounts receivable, net	0	0
Notes receivable, net	0	0
Inventories	0	0
Other current assets	63.6	65.4
Long-term notes receivable	0.4	0.5
Investment in subsidiaries	4,482.3	4,730.7
Goodwill	0	0
Intangible assets, net	160.5	162.0
Intercompany balances	0	0
Software, net	16.3	15.6
Other assets	3.1	2.8
Total assets	4,783.9	5,014.9
Liabilities and stockholders' equity
Debt payments due within one year	0	0
Other current liabilities	61.4	68.9
Long-term debt, excluding current installments	250.0	250.0
Other long-term liabilities	131.3	136.2
Intercompany balances	4,530.6	4,555.9
Stockholders’ (deficit) equity	(189.4)	3.9
Total liabilities and stockholders’ (deficit) equity	4,783.9	5,014.9
SGI
Assets
Cash and cash equivalents	0.3	0.1	0.2	0
Restricted cash	0	0
Accounts receivable, net	67.2	61.8
Notes receivable, net	0	0
Inventories	33.8	35.2
Other current assets	20.6	20.2
Long-term notes receivable	117.4	119.5
Investment in subsidiaries	864.1	953.4
Goodwill	253.6	253.6
Intangible assets, net	41.7	42.2
Intercompany balances	6,610.2	6,580.0
Software, net	29.5	32.9
Other assets	244.8	255.4
Total assets	8,283.2	8,354.3
Liabilities and stockholders' equity
Debt payments due within one year	43.0	43.0
Other current liabilities	172.7	119.8
Long-term debt, excluding current installments	8,173.2	8,187.7
Other long-term liabilities	72.7	74.0
Intercompany balances	0	(0.1)
Stockholders’ (deficit) equity	(178.4)	(70.1)
Total liabilities and stockholders’ (deficit) equity	8,283.2	8,354.3
Guarantor Subsidiaries
Assets
Cash and cash equivalents	19.6	28.8	11.4	24.4
Restricted cash	27.4	27.1
Accounts receivable, net	219.8	212.9
Notes receivable, net	114.6	136.6
Inventories	123.6	133.8
Other current assets	121.9	114.7
Long-term notes receivable	636.7	660.4
Investment in subsidiaries	950.0	975.2
Goodwill	2,772.1	2,781.6
Intangible assets, net	1,725.1	1,761.8
Intercompany balances	0	0
Software, net	443.4	467.3
Other assets	83.6	96.8
Total assets	7,237.8	7,397.0
Liabilities and stockholders' equity
Debt payments due within one year	0	0
Other current liabilities	231.4	247.2
Long-term debt, excluding current installments	0	0
Other long-term liabilities	535.9	593.7
Intercompany balances	1,758.1	1,637.9
Stockholders’ (deficit) equity	4,712.4	4,918.2
Total liabilities and stockholders’ (deficit) equity	7,237.8	7,397.0
Non-Guarantor Subsidiaries
Assets
Cash and cash equivalents	73.6	105.0	114.8	73.3
Restricted cash	0.1	0.1
Accounts receivable, net	176.8	193.7
Notes receivable, net	53.5	52.1
Inventories	122.2	124.4
Other current assets	54.7	56.0
Long-term notes receivable	222.2	241.7
Investment in subsidiaries	0	0
Goodwill	1,005.3	1,073.1
Intangible assets, net	276.4	285.6
Intercompany balances	0	0
Software, net	72.1	76.9
Other assets	275.0	296.8
Total assets	2,331.9	2,505.4
Liabilities and stockholders' equity
Debt payments due within one year	7.4	7.6
Other current liabilities	130.4	173.8
Long-term debt, excluding current installments	24.6	27.7
Other long-term liabilities	58.8	61.7
Intercompany balances	321.5	386.3
Stockholders’ (deficit) equity	1,789.2	1,848.3
Total liabilities and stockholders’ (deficit) equity	2,331.9	2,505.4
Eliminating Entries
Assets
Cash and cash equivalents	0	0	0	0
Restricted cash	0	0
Accounts receivable, net	0	0
Notes receivable, net	0	0
Inventories	(17.8)	(27.8)
Other current assets	0	0
Long-term notes receivable	(9.0)	(9.3)
Investment in subsidiaries	(6,296.4)	(6,659.3)
Goodwill	0	0
Intangible assets, net	0	0
Intercompany balances	(6,610.2)	(6,580.0)
Software, net	0	0
Other assets	0	0
Total assets	(12,933.4)	(13,276.4)
Liabilities and stockholders' equity
Debt payments due within one year	0	0
Other current liabilities	0	0
Long-term debt, excluding current installments	0	0
Other long-term liabilities	0	0
Intercompany balances	(6,610.2)	(6,580.0)
Stockholders’ (deficit) equity	(6,323.2)	(6,696.4)
Total liabilities and stockholders’ (deficit) equity	$ (12,933.4)	$ (13,276.4)