Preliminary Estimates of Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Business Combination, Separately Recognized Transactions [Line Items]
Goodwill	$ 2,297.1	$ 1,571.0
Energy Services
Business Combination, Separately Recognized Transactions [Line Items]
Accounts receivable-trade	36.8	10.9
Inventories	1.7	3.9
Other current and non-current assets	2.5	0.2
Property and equipment	141.5	34.3
Goodwill	333.1	54.7
Identified intangibles	109.0	20.5
Accounts payable	(6.8)	(9.9)
Other current and non-current liabilities	(106.2)	(0.6)
Total purchase price	511.6	114.0
Manufacturing | Domestic
Business Combination, Separately Recognized Transactions [Line Items]
Accounts receivable-trade	12.5
Inventories	17.3
Other current and non-current assets	1.3
Property and equipment	6.6
Goodwill	185.0
Identified intangibles	46.3
Accounts payable	(4.3)
Other current and non-current liabilities	(8.4)
Total purchase price	256.3
Manufacturing | Foreign
Business Combination, Separately Recognized Transactions [Line Items]
Accounts receivable-trade	12.8
Inventories	8.0
Other current and non-current assets	0.5
Property and equipment	5.6
Goodwill	209.7
Identified intangibles	54.1
Accounts payable	(3.7)
Other current and non-current liabilities	(11.7)
Total purchase price	$ 275.3