Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Sep. 28, 2013	Mar. 30, 2013
Net sales	$ 1,725.2		$ 1,774.5
Cost of goods sold	1,146.9		1,250.7
Gross profit	578.3		523.8
Selling, general and administrative	368.4		416.0
Research and development	30.0		33.5
Operating income	179.9		74.3
Other (income) expense:
Equity income of unconsolidated subsidiaries	(0.4)		(0.2)
Loss (gain) on sale of businesses	8.0	(0.1)	(16.7)
Net interest expense	15.7		17.0
Income before income taxes and noncontrolling interest	156.6		74.2
Provision for income taxes	38.0		20.9
Net income before noncontrolling interest	118.6		53.3
Noncontrolling interest	0		1.6
Net income attributable to Pentair Ltd.	118.6		51.7
Comprehensive income (loss), net of tax
Net income before noncontrolling interest	118.6		53.3
Changes in cumulative translation adjustment	(27.9)		(76.9)
Changes in market value of derivative financial instruments, net of $0.1 and $0.4 tax, respectively	0.2		0.7
Total comprehensive income (loss)	90.9		(22.9)
Less: Comprehensive income attributable to noncontrolling interest	0		0.7
Comprehensive income (loss) attributable to Pentair Ltd.	$ 90.9		$ (23.6)
Earnings per common share attributable to Pentair Ltd.
Basic (USD per share)	$ 0.60		$ 0.25
Diluted (USD per share)	$ 0.59		$ 0.25
Weighted average common shares outstanding
Basic (shares)	196.2		204.8
Diluted (shares)	199.7		208.2