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Consolidated Statements Of Changes In Equity (USD $) In Thousands, except Share data | Total | Common shares | Treasury shares | Capital contribution reserve | Retained earnings | Accumulated other comprehensive income (loss) | Total Pentair Ltd. | Noncontrolling interest
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Jan. 03, 2010 | $ 2,126,340 | $ 47,530 |  | $ 441,719 | $ 1,443,319 | $ 79,520 | $ 2,012,088 | $ 114,252
Balance (in shares) at Jan. 03, 2010 |  | 98,655,506 |  |  |  |  |  |
Net income (loss) | 189,406 |  |  |  | 184,913 |  | 184,913 | 4,493
Change in cumulative translation adjustment | (32,706) |  |  |  |  | (30,487) | (30,487) | (2,219)
Amortization of pension and other post-retirement prior service cost and transition obligation, net of $161 in 2012, $7 in 2011 and $111 in 2010 tax | 153 |  |  |  |  | 153 | 153 |
Changes in market value of derivative financial instruments, net of $3,661 in 2012, $2,884 in 2011 and $229 in 2010 tax | 310 |  |  |  |  | 310 | 310 |
Tax benefit of share-based compensation | 2,171 |  |  | 2,171 |  |  | 2,171 |
Dividends declared | (75,465) |  |  |  | (75,465) |  | (75,465) |
Distribution to noncontrolling interest | (4,647) |  |  |  |  |  |  | (4,647)
Share repurchase (in shares) |  | (726,777) |  |  |  |  |  |
Share repurchase | (24,712) | (350) |  | (24,362) |  |  | (24,712) |
Exercise of options, net of 45,123 in 2012, 182,270 in 2011 and 27,177 in 2010 shares tendered for payment (in shares) |  | 651,331 |  |  |  |  |  |
Exercise of options, net of 45,123 in 2012, 182,270 in 2011 and 27,177 in 2010 shares tendered for payment | 14,926 | 314 |  | 14,612 |  |  | 14,926 |
Issuance of restricted shares, net of cancellations (in shares) |  | (4,122) |  |  |  |  |  |
Issuance of restricted shares, net of cancellations | 706 | (2) |  | 708 |  |  | 706 |
Amortization of restricted shares | 3,538 |  |  | 3,538 |  |  | 3,538 |
Shares surrendered by employees to pay taxes (in shares) |  | (166,746) |  |  |  |  |  |
Shares surrendered by employees to pay taxes | (5,691) | (80) |  | (5,611) |  |  | (5,691) |
Share-based compensation | 10,703 |  |  | 10,703 |  |  | 10,703 |
Balance at Dec. 31, 2010 | 2,205,032 | 47,412 |  | 443,478 | 1,552,767 | 49,496 | 2,093,153 | 111,879
Balance (in shares) at Dec. 31, 2010 |  | 98,409,192 |  |  |  |  |  |
Net income (loss) | (3,151) |  |  |  | (7,450) |  | (7,450) | 4,299
Change in cumulative translation adjustment | (93,706) |  |  |  |  | (91,591) | (91,591) | (2,115)
Amortization of pension and other post-retirement prior service cost and transition obligation, net of $161 in 2012, $7 in 2011 and $111 in 2010 tax | (11) |  |  |  |  | (11) | (11) |
Changes in market value of derivative financial instruments, net of $3,661 in 2012, $2,884 in 2011 and $229 in 2010 tax | 4,375 |  |  |  |  | 4,375 | 4,375 |
Tax benefit of share-based compensation | 3,868 |  |  | 3,868 |  |  | 3,868 |
Dividends declared | (79,537) |  |  |  | (79,537) |  | (79,537) |
Share repurchase (in shares) |  | (397,126) |  |  |  |  |  |
Share repurchase | (12,785) | (211) |  | (12,574) |  |  | (12,785) |
Exercise of options, net of 45,123 in 2012, 182,270 in 2011 and 27,177 in 2010 shares tendered for payment (in shares) |  | 657,616 |  |  |  |  |  |
Exercise of options, net of 45,123 in 2012, 182,270 in 2011 and 27,177 in 2010 shares tendered for payment | 14,708 | 350 |  | 14,358 |  |  | 14,708 |
Issuance of restricted shares, net of cancellations (in shares) |  | 28,603 |  |  |  |  |  |
Issuance of restricted shares, net of cancellations | 1,475 | 15 |  | 1,460 |  |  | 1,475 |
Amortization of restricted shares | 1,006 |  |  | 1,006 |  |  | 1,006 |
Shares surrendered by employees to pay taxes (in shares) |  | (75,721) |  |  |  |  |  |
Shares surrendered by employees to pay taxes | (2,798) | (40) |  | (2,758) |  |  | (2,798) |
Share-based compensation | 8,916 |  |  | 8,916 |  |  | 8,916 |
Balance at Dec. 31, 2011 | 2,047,392 | 47,526 |  | 457,754 | 1,465,780 | (37,731) | 1,933,329 | 114,063
Balance (in shares) at Dec. 31, 2011 |  | 98,622,564 |  |  |  |  |  |
Net income (loss) | (104,612) |  |  |  | (107,186) |  | (107,186) | 2,574
Change in cumulative translation adjustment | 35,830 |  |  |  |  | 34,416 | 34,416 | 1,414
Amortization of pension and other post-retirement prior service cost and transition obligation, net of $161 in 2012, $7 in 2011 and $111 in 2010 tax | (253) |  |  |  |  | (253) | (253) |
Changes in market value of derivative financial instruments, net of $3,661 in 2012, $2,884 in 2011 and $229 in 2010 tax | (3,630) |  |  |  |  | (3,630) | (3,630) |
Tax benefit of share-based compensation | 5,555 |  |  | 5,555 |  |  | 5,555 |
Dividends declared | (207,364) |  |  | (141,058) | (66,306) |  | (207,364) |
Distribution to noncontrolling interest | (1,554) |  |  |  |  |  |  | (1,554)
Issuance of shares related to the Merger (in shares) |  | 113,611,537 | (2,712,603) |  |  |  |  |
Issuance of shares related to the Merger | 4,923,144 | 65,521 | (119,626) | 4,977,249 |  |  | 4,923,144 |
Share repurchase (in shares) |  |  | (7,291,078) |  |  |  |  |
Share repurchase | (334,159) |  | (334,159) |  |  |  | (334,159) |
Exercise of options, net of 45,123 in 2012, 182,270 in 2011 and 27,177 in 2010 shares tendered for payment (in shares) | 2,740,778 | 669,361 | 2,319,367 |  |  |  |  |
Exercise of options, net of 45,123 in 2012, 182,270 in 2011 and 27,177 in 2010 shares tendered for payment | 90,072 | 356 | 97,549 | (7,833) |  |  | 90,072 |
Issuance of restricted shares, net of cancellations (in shares) |  | 168,936 | 1,254,449 |  |  |  |  |
Issuance of restricted shares, net of cancellations | 18,984 | 90 | 59,798 | (40,904) |  |  | 18,984 |
Amortization of restricted shares | 24,209 |  |  | 24,209 |  |  | 24,209 |
Shares surrendered by employees to pay taxes (in shares) |  | (72,398) | (432,675) |  |  |  |  |
Shares surrendered by employees to pay taxes | (21,895) | (39) | (19,081) | (2,775) |  |  | (21,895) |
Share-based compensation | 11,638 |  |  | 11,638 |  |  | 11,638 |
Balance at Dec. 31, 2012 | $ 6,483,357 | $ 113,454 | $ (315,519) | $ 5,283,835 | $ 1,292,288 | $ (7,198) | $ 6,366,860 | $ 116,497
Balance (in shares) at Dec. 31, 2012 |  | 213,000,000 | (6,862,540) |  |  |  |  |

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