Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Net Amount	$ 1,106	$ 1,018
Amortization expense	204	178	128
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2015	195
2016	174
2017	146
2018	125
2019	110
Thereafter	356
Net Amount	1,106	1,018
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	40 months	40 months
Gross Carrying Amount	70	54
Accumulated Amortization	31	18
Net Amount	39	36
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Net Amount	39	36
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	12 years	13 years
Gross Carrying Amount	1,496	1,227
Accumulated Amortization	451	285
Net Amount	1,045	942
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Net Amount	1,045	942
Trade names and associated trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	28 months	40 months
Gross Carrying Amount	80	81
Accumulated Amortization	58	41
Net Amount	22	40
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Net Amount	22	40
National Pump
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount				289
National Pump | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets - Weighted-Average Remaining Amortization Period	60 months			6 years
Net Carrying Amount	13			15
National Pump | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets - Weighted-Average Remaining Amortization Period	10 years			10 years
Net Carrying Amount	$ 236			$ 274