Financial Statements of Parent Company Guarantor - Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 238.1	$ 238.5	$ 158.1	$ 126.3
Accounts and notes receivable, net	914.4	764.0
Inventories	546.0	524.2
Other current assets	264.8	253.4
Disposal Group, Including Discontinued Operation, Assets, Current	877.8	891.9
Total current assets	2,841.1	2,672.0
Property, plant and equipment, net	551.9	538.6
Other assets
Goodwill	4,295.3	4,217.4
Intangibles, net	1,622.5	1,631.8
Other non-current assets	195.3	182.1
Non-current assets held for sale	2,311.9	2,292.9
Assets, Noncurrent	8,425.0	8,324.2
Total assets	11,818.0	11,534.8
Long-term Debt, Current Maturities	0.7	0.8
Current liabilities
Accounts payable	387.3	436.6
Employee compensation and benefits	148.0	166.1
Other current liabilities	558.6	511.5
Disposal Group, Including Discontinued Operation, Liabilities, Current	303.0	356.2
Total current liabilities	1,397.6	1,471.2
Other liabilities
Long-term debt	4,528.9	4,278.4
Pension and other post-retirement compensation and benefits	258.6	253.4
Deferred tax liabilities	602.2	609.5
Other non-current liabilities	149.2	162.0
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent	506.7	505.9
Total liabilities	7,443.2	7,280.4
Equity
Total equity	4,374.8	4,254.4	4,084.2	4,008.8
Total liabilities and equity	11,818.0	11,534.8
Parent Company Guarantor
Current assets
Cash and cash equivalents	0.0	0.0	0.0	0.0
Accounts and notes receivable, net	0.0	0.1
Inventories		0.0
Other current assets	1.3	1.2
Total current assets	1.3	1.3
Property, plant and equipment, net		0.0
Other assets
Investments in subsidiaries	4,691.2	4,509.5
Other non-current assets	2.2	2.2
Assets, Noncurrent	4,693.4	4,511.7
Total assets	4,694.7	4,513.0
Long-term Debt, Current Maturities		0.0
Current liabilities
Accounts payable	0.0	0.7
Employee compensation and benefits	1.1	0.8
Other current liabilities	71.3	95.2
Total current liabilities	72.4	96.7
Other liabilities
Long-term debt	247.0	148.1
Other non-current liabilities	0.5	13.8
Total liabilities	319.9	258.6
Equity
Total equity	4,374.8	4,254.4
Total liabilities and equity	4,694.7	4,513.0
Guarantor Subsidiary [Member]
Current assets
Cash and cash equivalents	0.0
Accounts and notes receivable, net	0.0
Other current assets	3.1	4.1
Total current assets	3.1	4.1
Other assets
Investments in subsidiaries	4,653.2	4,471.4
Other non-current assets	36.2	35.2
Assets, Noncurrent	4,689.4	4,506.6
Total assets	4,692.5	4,510.7
Current liabilities
Accounts payable	0.0
Employee compensation and benefits	0.0	0.0
Other current liabilities	1.3	1.2
Total current liabilities	1.3	1.2
Other liabilities
Long-term debt	0.0	0.0
Other non-current liabilities	0.0
Total liabilities	1.3	1.2
Equity
Total equity	4,691.2	4,509.5
Total liabilities and equity	4,692.5	4,510.7
Subsidiary Issuer
Current assets
Cash and cash equivalents	0.1	0.0	0.0	0.1
Accounts and notes receivable, net	0.0	0.0
Inventories		0.0
Other current assets	4.0	1.1
Total current assets	4.1	1.1
Property, plant and equipment, net		0.0
Other assets
Investments in subsidiaries	9,500.9	9,295.5
Other non-current assets	869.0	717.8
Assets, Noncurrent	10,369.9	10,013.3
Total assets	10,374.0	10,014.4
Long-term Debt, Current Maturities		0.0
Current liabilities
Accounts payable	0.0	0.1
Other current liabilities	20.9	26.7
Total current liabilities	20.9	26.8
Other liabilities
Long-term debt	5,699.6	5,515.9
Deferred tax liabilities	0.0	0.0
Total liabilities	5,720.5	5,542.7
Equity
Total equity	4,653.5	4,471.7
Total liabilities and equity	10,374.0	10,014.4
Non-Guarantor Subsidiaries
Current assets
Cash and cash equivalents	238.0	238.5	$ 158.1	$ 126.2
Accounts and notes receivable, net	914.4	763.9
Inventories	546.0	524.2
Other current assets	268.1	237.8
Disposal Group, Including Discontinued Operation, Assets, Current	877.8	891.9
Total current assets	2,844.3	2,656.3
Property, plant and equipment, net	551.9	538.6
Other assets
Goodwill	4,295.3	4,217.4
Intangibles, net	1,622.5	1,631.8
Other non-current assets	1,495.9	1,568.9
Non-current assets held for sale	2,311.9	2,292.9
Assets, Noncurrent	9,725.6	9,711.0
Total assets	13,121.8	12,905.9
Long-term Debt, Current Maturities	0.7	0.8
Current liabilities
Accounts payable	387.3	435.8
Employee compensation and benefits	146.9	165.3
Other current liabilities	476.8	379.2
Disposal Group, Including Discontinued Operation, Liabilities, Current	303.0	356.2
Total current liabilities	1,314.7	1,337.3
Other liabilities
Long-term debt	790.3	756.4
Pension and other post-retirement compensation and benefits	258.6	253.4
Deferred tax liabilities	602.2	609.5
Other non-current liabilities	148.7	148.2
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent	506.7	505.9
Total liabilities	3,621.2	3,610.7
Equity
Total equity	9,500.6	9,295.2
Total liabilities and equity	13,121.8	12,905.9
Consolidation, Eliminations [Member]
Current assets
Accounts and notes receivable, net	0.0	0.0
Other current assets	(11.7)	9.2
Total current assets	(11.7)	9.2
Other assets
Investments in subsidiaries	(18,845.3)	(18,276.4)
Other non-current assets	(2,208.0)	(2,142.0)
Assets, Noncurrent	(21,053.3)	(20,418.4)
Total assets	(21,065.0)	(20,409.2)
Current liabilities
Accounts payable	0.0	0.0
Other current liabilities	(11.7)	9.2
Total current liabilities	(11.7)	9.2
Other liabilities
Long-term debt	(2,208.0)	(2,142.0)
Other non-current liabilities	0.0	0.0
Total liabilities	(2,219.7)	(2,132.8)
Equity
Total equity	(18,845.3)	(18,276.4)
Total liabilities and equity	$ (21,065.0)	$ (20,409.2)