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Stock-based Compensation Plans (Tables)

9 Months Ended

Jun. 30, 2017

Share-based Compensation [Abstract]

Schedule of Share-based Compensation, Activity [Table Text Block]

We granted stock-based compensation under the 2006 Stock Plan, the Mueller Water Products, Inc. 2006 Employee Stock Purchase Plan and the Phantom Plan during the nine months ended June 30, 2017 as follows.

		Number granted			Weighted average grant date fair value per instrument				Total grant date fair value (in millions)
Quarter ended December 31, 2016:
Restricted stock units		177,861			$	13.26			$	2.4
Employee stock purchase plan instruments		39,231			2.34				0.1
Phantom Plan awards		187,115			13.26				2.5
PRSUs: 2017 award		59,285			13.26				0.8
2016 award		73,826			13.26				1.0
2015 award		68,556			13.26				0.9
Quarter ended March 31, 2017:
Restricted stock units		165,999			12.82				2.1
Employee stock purchase plan instruments		38,267			2.44				0.1
Phantom Plan awards		12,145			12.66				0.2
PRSUs: 2017 award		19,012			13.15				0.2
Quarter ended June 30, 2017:
Employee stock purchase plan instruments		36,195			2.70				0.1
									$	10.4

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- Definition

Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value.

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