Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries - Balance Sheets (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries [Abstract]
Parent company's percentage ownership of guarantors (as a percent)	100.00%
ASSETS
Cash and cash equivalents	$ 153.7	$ 109.0	$ 104.4	$ 124.3
Restricted cash	10.9	30.4
Accounts receivable, net	346.0	209.9
Notes receivable, net	158.7	10.3
Inventories	137.8	71.3
Other current assets	154.4	53.7
Property and equipment, net	772.6	376.9
Investment in subsidiaries	0	0
Goodwill	1,186.9	801.4	768.4
Intangible assets, net	411.1	84.3
Intercompany balances	0	0
Other assets	909.8	439.7
Total assets	4,241.9	2,186.9	2,161.9
LIABILITIES AND STOCKHOLDERS' EQUITY
Current installments of long-term debt	30.4	16.5
Other current liabilities	426.7	239.8
Long-term debt, excluding current installments	3,162.2	1,451.7
Other non-current liabilities	247.6	114.1
Intercompany balances	0	0
Stockholders’ equity	375.0	364.8	443.7
Total liabilities and stockholders' equity	4,241.9	2,186.9
Parent Company
ASSETS
Cash and cash equivalents	56.0	27.2
Restricted cash	0	0
Accounts receivable, net	0	0
Notes receivable, net	0	10.3
Inventories	0	0
Other current assets	13.9	9.7
Property and equipment, net	1.1	5.8
Investment in subsidiaries	1,962.5	521.0
Goodwill	0	0
Intangible assets, net	1.9	0
Intercompany balances	0	79.7
Other assets	15.4	6.4
Total assets	2,050.8	660.1
LIABILITIES AND STOCKHOLDERS' EQUITY
Current installments of long-term debt	0	0
Other current liabilities	30.4	28.5
Long-term debt, excluding current installments	250.0	250.0
Other non-current liabilities	20.8	16.8
Intercompany balances	1,374.6	0
Stockholders’ equity	375.0	364.8
Total liabilities and stockholders' equity	2,050.8	660.1
SGI
ASSETS
Cash and cash equivalents	0	0.2
Restricted cash	0	0
Accounts receivable, net	66.9	63.9
Notes receivable, net	0
Inventories	28.2	25.4
Other current assets	10.5	3.8
Property and equipment, net	137.3	154.2
Investment in subsidiaries	796.5	802.4
Goodwill	251.7	253.9
Intangible assets, net	42.0	42.0
Intercompany balances	1,430.1	0
Other assets	179.4	75.0
Total assets	2,942.6	1,420.8
LIABILITIES AND STOCKHOLDERS' EQUITY
Current installments of long-term debt	23.0	6.3
Other current liabilities	63.2	58.4
Long-term debt, excluding current installments	2,912.2	1,199.2
Other non-current liabilities	37.8	25.6
Intercompany balances	0	136.4
Stockholders’ equity	(93.6)	(5.1)
Total liabilities and stockholders' equity	2,942.6	1,420.8
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	24.4	0
Restricted cash	10.9	0
Accounts receivable, net	135.4	29.1
Notes receivable, net	90.9	0
Inventories	59.6	16.1
Other current assets	95.0	6.8
Property and equipment, net	441.3	33.0
Investment in subsidiaries	0	0
Goodwill	464.6	76.7
Intangible assets, net	340.6	20.4
Intercompany balances	296.3	302.4
Other assets	293.6	7.5
Total assets	2,252.6	492.0
LIABILITIES AND STOCKHOLDERS' EQUITY
Current installments of long-term debt	0	0
Other current liabilities	174.9	35.4
Long-term debt, excluding current installments	0	0
Other non-current liabilities	121.2	12.2
Intercompany balances	0	0
Stockholders’ equity	1,956.5	444.4
Total liabilities and stockholders' equity	2,252.6	492.0
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	73.3	82.8
Restricted cash	0	30.4
Accounts receivable, net	143.7	116.9
Notes receivable, net	67.8	0
Inventories	50.0	29.8
Other current assets	35.0	33.4
Property and equipment, net	192.9	183.9
Investment in subsidiaries	0	855.8
Goodwill	470.6	470.8
Intangible assets, net	26.6	21.9
Intercompany balances	0	0
Other assets	421.4	353.4
Total assets	1,481.3	2,179.1
LIABILITIES AND STOCKHOLDERS' EQUITY
Current installments of long-term debt	7.4	10.2
Other current liabilities	158.2	118.7
Long-term debt, excluding current installments	0	2.5
Other non-current liabilities	67.8	59.5
Intercompany balances	351.8	245.7
Stockholders’ equity	896.1	1,742.5
Total liabilities and stockholders' equity	1,481.3	2,179.1
Eliminating Entries
ASSETS
Cash and cash equivalents	0	(1.2)
Restricted cash	0	0
Accounts receivable, net	0	0
Notes receivable, net	0	0
Inventories	0	0
Other current assets	0	0
Property and equipment, net	0	0
Investment in subsidiaries	(2,759.0)	(2,179.2)
Goodwill	0	0
Intangible assets, net	0	0
Intercompany balances	(1,726.4)	(382.1)
Other assets	0	(2.6)
Total assets	(4,485.4)	(2,565.1)
LIABILITIES AND STOCKHOLDERS' EQUITY
Current installments of long-term debt	0	0
Other current liabilities	0	(1.2)
Long-term debt, excluding current installments	0	0
Other non-current liabilities	0	0
Intercompany balances	(1,726.4)	(382.1)
Stockholders’ equity	(2,759.0)	(2,181.8)
Total liabilities and stockholders' equity	$ (4,485.4)	$ (2,565.1)