Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Net sales	$ 1,963.7	$ 941.5	$ 3,738.2	$ 1,799.7
Cost of goods sold	1,296.3	629.4	2,547.0	1,206.9
Gross profit	667.4	312.1	1,191.2	592.8
Selling, general and administrative	409.4	172.0	825.4	345.4
Research and development	32.1	20.8	65.6	41.6
Operating income	225.9	119.3	300.2	205.8
Other (income) expense:
Equity income of unconsolidated subsidiaries	(0.9)	(0.6)	(1.1)	(1.7)
Gain on sale of business	0	0	(16.7)	0
Net interest expense	18.4	16.1	35.4	30.9
Income before income taxes and noncontrolling interest	208.4	103.8	282.6	176.6
Provision for income taxes	53.0	29.4	73.9	39.1
Net income before noncontrolling interest	155.4	74.4	208.7	137.5
Noncontrolling interest	1.3	1.7	2.9	3.0
Net income attributable to Pentair Ltd.	154.1	72.7	205.8	134.5
Comprehensive income (loss), net of tax
Net income before noncontrolling interest	155.4	74.4	208.7	137.5
Changes in cumulative translation adjustment	(41.2)	(85.3)	(118.2)	(45.0)
Changes in market value of derivative financial instruments	(0.4)	1.3	0.3	3.1
Total comprehensive income (loss)	113.8	(9.6)	90.8	95.6
Less: Comprehensive income (loss) attributable to noncontrolling interest	1.8	(0.2)	2.4	2.0
Comprehensive income (loss) attributable to Pentair Ltd.	$ 112.0	$ (9.4)	$ 88.4	$ 93.6
Earnings per common share attributable to Pentair Ltd.
Basic (USD per share)	$ 0.76	$ 0.73	$ 1.01	$ 1.36
Diluted (USD per share)	$ 0.75	$ 0.72	$ 0.99	$ 1.33
Weighted average common shares outstanding
Basic (shares)	202.1	99.0	203.5	98.9
Diluted (shares)	205.5	101.2	206.9	100.8
Cash dividends paid per common share (USD per share)	$ 0.23	$ 0.22	$ 0.46	$ 0.44